70023137 has 4 divisors (see below), whose sum is σ = 70136880. Its totient is φ = 69909396.

The previous prime is 70023131. The next prime is 70023157. The reversal of 70023137 is 73132007.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70023137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70023131) 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, 55943 + ... + 57180.

It is an arithmetic number, because the mean of its divisors is an integer number (17534220).

Almost surely, 2^70023137 is an apocalyptic number.

It is an amenable number.

70023137 is a deficient number, since it is larger than the sum of its proper divisors (113743).

70023137 is a wasteful number, since it uses less digits than its factorization.

70023137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113742.

The product of its (nonzero) digits is 882, while the sum is 23.

The square root of 70023137 is about 8367.9828513209. The cubic root of 70023137 is about 412.1739317305.

The spelling of 70023137 in words is "seventy million, twenty-three thousand, one hundred thirty-seven".