70364640 has 96 divisors (see below), whose sum is σ = 226437120. Its totient is φ = 18358784.

The previous prime is 70364617. The next prime is 70364647. The reversal of 70364640 is 4646307.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 70364598 and 70364607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70364647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21001 + ... + 24119.

It is an arithmetic number, because the mean of its divisors is an integer number (2358720).

Almost surely, 2^70364640 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 70364640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113218560).

70364640 is an abundant number, since it is smaller than the sum of its proper divisors (156072480).

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

70364640 is a wasteful number, since it uses less digits than its factorization.

70364640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3184 (or 3176 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 70364640 is about 8388.3633683812. The cubic root of 70364640 is about 412.8429031185.

The spelling of 70364640 in words is "seventy million, three hundred sixty-four thousand, six hundred forty".