72749697 has 8 divisors (see below), whose sum is σ = 97651200. Its totient is φ = 48174000.

The previous prime is 72749693. The next prime is 72749711. The reversal of 72749697 is 79694727.

It is a happy number.

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

It is not a de Polignac number, because 72749697 - 2² = 72749693 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72749693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80929 + ... + 81822.

It is an arithmetic number, because the mean of its divisors is an integer number (12206400).

Almost surely, 2^72749697 is an apocalyptic number.

It is an amenable number.

72749697 is a deficient number, since it is larger than the sum of its proper divisors (24901503).

72749697 is a wasteful number, since it uses less digits than its factorization.

72749697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162903.

The product of its digits is 1333584, while the sum is 51.

The square root of 72749697 is about 8529.3432924229. The cubic root of 72749697 is about 417.4557008946.

The spelling of 72749697 in words is "seventy-two million, seven hundred forty-nine thousand, six hundred ninety-seven".