72472567 has 4 divisors (see below), whose sum is σ = 72497656. Its totient is φ = 72447480.

The previous prime is 72472549. The next prime is 72472573. The reversal of 72472567 is 76527427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76527427 = 1811 ⋅42257.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72472567 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 (72472507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7548 + ... + 14209.

It is an arithmetic number, because the mean of its divisors is an integer number (18124414).

Almost surely, 2^72472567 is an apocalyptic number.

72472567 is a deficient number, since it is larger than the sum of its proper divisors (25089).

72472567 is a wasteful number, since it uses less digits than its factorization.

72472567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25088.

The product of its digits is 164640, while the sum is 40.

The square root of 72472567 is about 8513.0821093186. The cubic root of 72472567 is about 416.9249462846.

The spelling of 72472567 in words is "seventy-two million, four hundred seventy-two thousand, five hundred sixty-seven".