72697698 has 12 divisors (see below), whose sum is σ = 157511718. Its totient is φ = 24232560.

The previous prime is 72697663. The next prime is 72697727. The reversal of 72697698 is 89679627.

It can be written as a sum of positive squares in only one way, i.e., 72641529 + 56169 = 8523^2 + 237^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2019363 + ... + 2019398.

Almost surely, 2^72697698 is an apocalyptic number.

72697698 is an abundant number, since it is smaller than the sum of its proper divisors (84814020).

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

72697698 is a wasteful number, since it uses less digits than its factorization.

72697698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038769 (or 4038766 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 72697698 is about 8526.2945058214. The cubic root of 72697698 is about 417.3562161599.

The spelling of 72697698 in words is "seventy-two million, six hundred ninety-seven thousand, six hundred ninety-eight".