72245667 has 16 divisors (see below), whose sum is σ = 104491520. Its totient is φ = 44135712.

The previous prime is 72245647. The next prime is 72245669. The reversal of 72245667 is 76654227.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-72245667 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72245669) 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, 1243 + ... + 12084.

It is an arithmetic number, because the mean of its divisors is an integer number (6530720).

Almost surely, 2^72245667 is an apocalyptic number.

72245667 is a deficient number, since it is larger than the sum of its proper divisors (32245853).

72245667 is a wasteful number, since it uses less digits than its factorization.

72245667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13482.

The product of its digits is 141120, while the sum is 39.

The square root of 72245667 is about 8499.7451138255. The cubic root of 72245667 is about 416.4893829977.

The spelling of 72245667 in words is "seventy-two million, two hundred forty-five thousand, six hundred sixty-seven".