72479961 has 16 divisors (see below), whose sum is σ = 111081600. Its totient is φ = 46653264.

The previous prime is 72479941. The next prime is 72479963. The reversal of 72479961 is 16997427.

It is not a de Polignac number, because 72479961 - 2¹⁴ = 72463577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72479963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45501 + ... + 47066.

It is an arithmetic number, because the mean of its divisors is an integer number (6942600).

Almost surely, 2^72479961 is an apocalyptic number.

It is an amenable number.

72479961 is a deficient number, since it is larger than the sum of its proper divisors (38601639).

72479961 is a wasteful number, since it uses less digits than its factorization.

72479961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92605 (or 92599 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 72479961 is about 8513.5163710420. The cubic root of 72479961 is about 416.9391246988.

The spelling of 72479961 in words is "seventy-two million, four hundred seventy-nine thousand, nine hundred sixty-one".