70740864 has 80 divisors (see below), whose sum is σ = 210554520. Its totient is φ = 23576832.

The previous prime is 70740863. The next prime is 70740877. The reversal of 70740864 is 46804707.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70740863) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6957 + ... + 13779.

Almost surely, 2^70740864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70740864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105277260).

70740864 is an abundant number, since it is smaller than the sum of its proper divisors (139813656).

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

70740864 is an equidigital number, since it uses as much as digits as its factorization.

70740864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6849 (or 6828 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 70740864 is about 8410.7588242679. The cubic root of 70740864 is about 413.5773885305.

The spelling of 70740864 in words is "seventy million, seven hundred forty thousand, eight hundred sixty-four".