70731916 has 12 divisors (see below), whose sum is σ = 125007120. Its totient is φ = 35015600.

The previous prime is 70731911. The next prime is 70731931. The reversal of 70731916 is 61913707.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (70731911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87136 + ... + 87943.

It is an arithmetic number, because the mean of its divisors is an integer number (10417260).

Almost surely, 2^70731916 is an apocalyptic number.

It is an amenable number.

70731916 is a deficient number, since it is larger than the sum of its proper divisors (54275204).

70731916 is a wasteful number, since it uses less digits than its factorization.

70731916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175184 (or 175182 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 70731916 is about 8410.2268697105. The cubic root of 70731916 is about 413.5599500171.

It can be divided in two parts, 707 and 31916, that added together give a palindrome (32623).

The spelling of 70731916 in words is "seventy million, seven hundred thirty-one thousand, nine hundred sixteen".