72575687 has 4 divisors (see below), whose sum is σ = 76395480. Its totient is φ = 68755896.

The previous prime is 72575677. The next prime is 72575689. The reversal of 72575687 is 78657527.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 72575687 - 2¹² = 72571591 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 (72575689) 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, 1909868 + ... + 1909905.

It is an arithmetic number, because the mean of its divisors is an integer number (19098870).

Almost surely, 2^72575687 is an apocalyptic number.

72575687 is a deficient number, since it is larger than the sum of its proper divisors (3819793).

72575687 is a wasteful number, since it uses less digits than its factorization.

72575687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3819792.

The product of its digits is 823200, while the sum is 47.

The square root of 72575687 is about 8519.1365172769. The cubic root of 72575687 is about 417.1225977403.

The spelling of 72575687 in words is "seventy-two million, five hundred seventy-five thousand, six hundred eighty-seven".