70770000 has 200 divisors, whose sum is σ = 261866176. Its totient is φ = 16128000.

The previous prime is 70769989. The next prime is 70770001. The reversal of 70770000 is 7707.

It is a tau number, because it is divible by the number of its divisors (200).

It is a super-3 number, since 3×70770000³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70770001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 209832 + ... + 210168.

Almost surely, 2^70770000 is an apocalyptic number.

70770000 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70770000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130933088).

70770000 is an abundant number, since it is smaller than the sum of its proper divisors (191096176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70770000 is a wasteful number, since it uses less digits than its factorization.

70770000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 343, while the sum is 21.

The square root of 70770000 is about 8412.4907132192. The cubic root of 70770000 is about 413.6341606994.

Adding to 70770000 its reverse (7707), we get a palindrome (70777707).

It can be divided in two parts, 707 and 70000, that added together give a palindrome (70707).

The spelling of 70770000 in words is "seventy million, seven hundred seventy thousand".