72074657 has 8 divisors (see below), whose sum is σ = 78484800. Its totient is φ = 65926224.

The previous prime is 72074633. The next prime is 72074683. The reversal of 72074657 is 75647027.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72074657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72074657.

It is not an unprimeable number, because it can be changed into a prime (72074687) 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, 64853 + ... + 65954.

It is an arithmetic number, because the mean of its divisors is an integer number (9810600).

Almost surely, 2^72074657 is an apocalyptic number.

It is an amenable number.

72074657 is a deficient number, since it is larger than the sum of its proper divisors (6410143).

72074657 is a wasteful number, since it uses less digits than its factorization.

72074657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130855.

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 72074657 is about 8489.6794403558. The cubic root of 72074657 is about 416.1605045866.

The spelling of 72074657 in words is "seventy-two million, seventy-four thousand, six hundred fifty-seven".