70036731 has 24 divisors (see below), whose sum is σ = 105303744. Its totient is φ = 46516680.

The previous prime is 70036697. The next prime is 70036783. The reversal of 70036731 is 13763007.

It is not a de Polignac number, because 70036731 - 2⁶ = 70036667 is a prime.

It is a super-2 number, since 2×70036731² = 9810287378332722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 70036695 and 70036704.

It is not an unprimeable number, because it can be changed into a prime (70036331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119020 + ... + 119606.

It is an arithmetic number, because the mean of its divisors is an integer number (4387656).

Almost surely, 2^70036731 is an apocalyptic number.

70036731 is a deficient number, since it is larger than the sum of its proper divisors (35267013).

70036731 is an equidigital number, since it uses as much as digits as its factorization.

70036731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093 (or 1081 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 27.

The square root of 70036731 is about 8368.7950745612. The cubic root of 70036731 is about 412.2006025811.

Adding to 70036731 its reverse (13763007), we get a palindrome (83799738).

The spelling of 70036731 in words is "seventy million, thirty-six thousand, seven hundred thirty-one".