70996637 has 4 divisors (see below), whose sum is σ = 71699676. Its totient is φ = 70293600.

The previous prime is 70996621. The next prime is 70996643. The reversal of 70996637 is 73669907.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48916036 + 22080601 = 6994^2 + 4699^2 .

It is a cyclic number.

It is not a de Polignac number, because 70996637 - 2⁴ = 70996621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70996591 and 70996600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70996687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351368 + ... + 351569.

It is an arithmetic number, because the mean of its divisors is an integer number (17924919).

Almost surely, 2^70996637 is an apocalyptic number.

It is an amenable number.

70996637 is a deficient number, since it is larger than the sum of its proper divisors (703039).

70996637 is a wasteful number, since it uses less digits than its factorization.

70996637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703038.

The product of its (nonzero) digits is 428652, while the sum is 47.

The square root of 70996637 is about 8425.9502134774. The cubic root of 70996637 is about 414.0752370127.

The spelling of 70996637 in words is "seventy million, nine hundred ninety-six thousand, six hundred thirty-seven".