72150677 has 4 divisors (see below), whose sum is σ = 72227340. Its totient is φ = 72074016.

The previous prime is 72150667. The next prime is 72150691. The reversal of 72150677 is 77605127.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47210641 + 24940036 = 6871^2 + 4994^2 .

It is a cyclic number.

It is not a de Polignac number, because 72150677 - 2²² = 67956373 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 (72150607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36902 + ... + 38807.

It is an arithmetic number, because the mean of its divisors is an integer number (18056835).

Almost surely, 2^72150677 is an apocalyptic number.

It is an amenable number.

72150677 is a deficient number, since it is larger than the sum of its proper divisors (76663).

72150677 is an equidigital number, since it uses as much as digits as its factorization.

72150677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76662.

The product of its (nonzero) digits is 20580, while the sum is 35.

The square root of 72150677 is about 8494.1554612569. The cubic root of 72150677 is about 416.3067668404.

It can be divided in two parts, 72150 and 677, that added together give a palindrome (72827).

The spelling of 72150677 in words is "seventy-two million, one hundred fifty thousand, six hundred seventy-seven".