72691075 has 12 divisors (see below), whose sum is σ = 90541080. Its totient is φ = 57892160.

The previous prime is 72691067. The next prime is 72691079. The reversal of 72691075 is 57019627.

It is not a de Polignac number, because 72691075 - 2³ = 72691067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72691079) 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, 730 + ... + 12079.

It is an arithmetic number, because the mean of its divisors is an integer number (7545090).

Almost surely, 2^72691075 is an apocalyptic number.

72691075 is a deficient number, since it is larger than the sum of its proper divisors (17850005).

72691075 is a wasteful number, since it uses less digits than its factorization.

72691075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13046 (or 13041 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 72691075 is about 8525.9061102032. The cubic root of 72691075 is about 417.3435415991.

The spelling of 72691075 in words is "seventy-two million, six hundred ninety-one thousand, seventy-five".