70279664 has 120 divisors (see below), whose sum is σ = 174274560. Its totient is φ = 26866944.

The previous prime is 70279631. The next prime is 70279667. The reversal of 70279664 is 46697207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70279667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 889577 + ... + 889655.

It is an arithmetic number, because the mean of its divisors is an integer number (1452288).

Almost surely, 2^70279664 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 70279664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87137280).

70279664 is an abundant number, since it is smaller than the sum of its proper divisors (103994896).

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

70279664 is a wasteful number, since it uses less digits than its factorization.

70279664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 70279664 is about 8383.2967262289. The cubic root of 70279664 is about 412.6766459843.

The spelling of 70279664 in words is "seventy million, two hundred seventy-nine thousand, six hundred sixty-four".