70077312 has 112 divisors (see below), whose sum is σ = 209593680. Its totient is φ = 23328000.

The previous prime is 70077209. The next prime is 70077341. The reversal of 70077312 is 21377007.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 92937 + ... + 93687.

Almost surely, 2^70077312 is an apocalyptic number.

70077312 is a gapful number since it is divisible by the number (72) 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 70077312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104796840).

70077312 is an abundant number, since it is smaller than the sum of its proper divisors (139516368).

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

70077312 is an frugal number, since it uses more digits than its factorization.

70077312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 2058, while the sum is 27.

The square root of 70077312 is about 8371.2192660329. The cubic root of 70077312 is about 412.2802002564.

The spelling of 70077312 in words is "seventy million, seventy-seven thousand, three hundred twelve".