70037405 has 8 divisors (see below), whose sum is σ = 84816600. Its totient is φ = 55515456.

The previous prime is 70037381. The next prime is 70037413. The reversal of 70037405 is 50473007.

It can be written as a sum of positive squares in 4 ways, for example, as 19882681 + 50154724 = 4459^2 + 7082^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70037405 is a prime.

It is a Curzon number.

It is a congruent number.

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, 63710 + ... + 64799.

It is an arithmetic number, because the mean of its divisors is an integer number (10602075).

Almost surely, 2^70037405 is an apocalyptic number.

It is an amenable number.

70037405 is a deficient number, since it is larger than the sum of its proper divisors (14779195).

70037405 is a wasteful number, since it uses less digits than its factorization.

70037405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128623.

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 70037405 is about 8368.8353431048. The cubic root of 70037405 is about 412.2019248506.

The spelling of 70037405 in words is "seventy million, thirty-seven thousand, four hundred five".