72246664 has 32 divisors (see below), whose sum is σ = 162964800. Its totient is φ = 29332800.

The previous prime is 72246649. The next prime is 72246701. The reversal of 72246664 is 46664227.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 32887 + ... + 35014.

It is an arithmetic number, because the mean of its divisors is an integer number (5092650).

Almost surely, 2^72246664 is an apocalyptic number.

It is an amenable number.

72246664 is an abundant number, since it is smaller than the sum of its proper divisors (90718136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72246664 is a wasteful number, since it uses less digits than its factorization.

72246664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67933 (or 67929 counting only the distinct ones).

The product of its digits is 96768, while the sum is 37.

The square root of 72246664 is about 8499.8037624406. The cubic root of 72246664 is about 416.4912988588.

The spelling of 72246664 in words is "seventy-two million, two hundred forty-six thousand, six hundred sixty-four".