70265640 has 32 divisors (see below), whose sum is σ = 210797280. Its totient is φ = 18737472.

The previous prime is 70265609. The next prime is 70265669. The reversal of 70265640 is 4656207.

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 = 70265598 and 70265607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292654 + ... + 292893.

It is an arithmetic number, because the mean of its divisors is an integer number (6587415).

Almost surely, 2^70265640 is an apocalyptic number.

It is an amenable number.

70265640 is an abundant number, since it is smaller than the sum of its proper divisors (140531640).

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

70265640 is a wasteful number, since it uses less digits than its factorization.

70265640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585561 (or 585557 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 70265640 is about 8382.4602593749. The cubic root of 70265640 is about 412.6491948842.

The spelling of 70265640 in words is "seventy million, two hundred sixty-five thousand, six hundred forty".