72656698 has 8 divisors (see below), whose sum is σ = 109153908. Its totient is φ = 36272064.

The previous prime is 72656677. The next prime is 72656699. The reversal of 72656698 is 89665627.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 63250209 + 9406489 = 7953^2 + 3067^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (72656699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26511 + ... + 29122.

Almost surely, 2^72656698 is an apocalyptic number.

72656698 is a deficient number, since it is larger than the sum of its proper divisors (36497210).

72656698 is a wasteful number, since it uses less digits than its factorization.

72656698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56288.

The product of its digits is 1088640, while the sum is 49.

The square root of 72656698 is about 8523.8898397387. The cubic root of 72656698 is about 417.2777413103.

The spelling of 72656698 in words is "seventy-two million, six hundred fifty-six thousand, six hundred ninety-eight".