70536531 has 16 divisors (see below), whose sum is σ = 106615040. Its totient is φ = 41122080.

The previous prime is 70536511. The next prime is 70536539. The reversal of 70536531 is 13563507.

It is not a de Polignac number, because 70536531 - 2¹⁴ = 70520147 is a prime.

It is a super-2 number, since 2×70536531² = 9950804411027922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70536539) 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, 46855 + ... + 48336.

It is an arithmetic number, because the mean of its divisors is an integer number (6663440).

Almost surely, 2^70536531 is an apocalyptic number.

70536531 is a deficient number, since it is larger than the sum of its proper divisors (36078509).

70536531 is a wasteful number, since it uses less digits than its factorization.

70536531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95226.

The product of its (nonzero) digits is 9450, while the sum is 30.

The square root of 70536531 is about 8398.6029195337. The cubic root of 70536531 is about 413.1788022895.

The spelling of 70536531 in words is "seventy million, five hundred thirty-six thousand, five hundred thirty-one".