72757071 has 12 divisors (see below), whose sum is σ = 105167920. Its totient is φ = 48470400.

The previous prime is 72757051. The next prime is 72757103. The reversal of 72757071 is 17075727.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-72757071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72757021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21375 + ... + 24543.

Almost surely, 2^72757071 is an apocalyptic number.

72757071 is a deficient number, since it is larger than the sum of its proper divisors (32410849).

72757071 is a wasteful number, since it uses less digits than its factorization.

72757071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5726 (or 5723 counting only the distinct ones).

The product of its (nonzero) digits is 24010, while the sum is 36.

The square root of 72757071 is about 8529.7755539053. The cubic root of 72757071 is about 417.4698050282.

The spelling of 72757071 in words is "seventy-two million, seven hundred fifty-seven thousand, seventy-one".