72680618 has 8 divisors (see below), whose sum is σ = 111680100. Its totient is φ = 35453920.

The previous prime is 72680591. The next prime is 72680653. The reversal of 72680618 is 81608627.

It can be written as a sum of positive squares in 2 ways, for example, as 69172489 + 3508129 = 8317^2 + 1873^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443093 + ... + 443256.

Almost surely, 2^72680618 is an apocalyptic number.

72680618 is a deficient number, since it is larger than the sum of its proper divisors (38999482).

72680618 is a wasteful number, since it uses less digits than its factorization.

72680618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886392.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 72680618 is about 8525.2928395452. The cubic root of 72680618 is about 417.3235282724.

The spelling of 72680618 in words is "seventy-two million, six hundred eighty thousand, six hundred eighteen".