7700070 has 64 divisors (see below), whose sum is σ = 21712896. Its totient is φ = 1710720.

The previous prime is 7699981. The next prime is 7700071. The reversal of 7700070 is 700077.

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 (7700071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7275 + ... + 8265.

It is an arithmetic number, because the mean of its divisors is an integer number (339264).

Almost surely, 2^7700070 is an apocalyptic number.

7700070 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7700070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10856448).

7700070 is an abundant number, since it is smaller than the sum of its proper divisors (14012826).

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

7700070 is a wasteful number, since it uses less digits than its factorization.

7700070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045.

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

The square root of 7700070 is about 2774.8999981981. The cubic root of 7700070 is about 197.4686806076.

The spelling of 7700070 in words is "seven million, seven hundred thousand, seventy".