72075656 has 32 divisors (see below), whose sum is σ = 137433240. Its totient is φ = 35432448.

The previous prime is 72075599. The next prime is 72075691. The reversal of 72075656 is 65657027.

It can be written as a sum of positive squares in 4 ways, for example, as 60310756 + 11764900 = 7766^2 + 3430^2 .

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, 227210 + ... + 227526.

Almost surely, 2^72075656 is an apocalyptic number.

It is an amenable number.

72075656 is a deficient number, since it is larger than the sum of its proper divisors (65357584).

72075656 is a wasteful number, since it uses less digits than its factorization.

72075656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713 (or 709 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 72075656 is about 8489.7382762957. The cubic root of 72075656 is about 416.1624273264.

The spelling of 72075656 in words is "seventy-two million, seventy-five thousand, six hundred fifty-six".