72612626 has 4 divisors (see below), whose sum is σ = 108918942. Its totient is φ = 36306312.

The previous prime is 72612619. The next prime is 72612641. The reversal of 72612626 is 62621627.

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

It can be written as a sum of positive squares in only one way, i.e., 63218401 + 9394225 = 7951^2 + 3065^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72612592 and 72612601.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18153155 + ... + 18153158.

Almost surely, 2^72612626 is an apocalyptic number.

72612626 is a deficient number, since it is larger than the sum of its proper divisors (36306316).

72612626 is a wasteful number, since it uses less digits than its factorization.

72612626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36306315.

The product of its digits is 12096, while the sum is 32.

The square root of 72612626 is about 8521.3042428962. The cubic root of 72612626 is about 417.1933536592.

Subtracting from 72612626 its reverse (62621627), we obtain a palindrome (9990999).

The spelling of 72612626 in words is "seventy-two million, six hundred twelve thousand, six hundred twenty-six".