72698680687 has 2 divisors, whose sum is σ = 72698680688. Its totient is φ = 72698680686.

The previous prime is 72698680651. The next prime is 72698680709. The reversal of 72698680687 is 78608689627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72698680687 - 2⁷ = 72698680559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72698680627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36349340343 + 36349340344.

It is an arithmetic number, because the mean of its divisors is an integer number (36349340344).

Almost surely, 2^72698680687 is an apocalyptic number.

72698680687 is a deficient number, since it is larger than the sum of its proper divisors (1).

72698680687 is an equidigital number, since it uses as much as digits as its factorization.

72698680687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97542144, while the sum is 67.

The spelling of 72698680687 in words is "seventy-two billion, six hundred ninety-eight million, six hundred eighty thousand, six hundred eighty-seven".