72574887 has 32 divisors (see below), whose sum is σ = 127747584. Its totient is φ = 35481600.

The previous prime is 72574883. The next prime is 72574891. The reversal of 72574887 is 78847527.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72574883) and next prime (72574891).

It is not a de Polignac number, because 72574887 - 2² = 72574883 is a prime.

It is a super-2 number, since 2×72574887² = 10534228446125538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72574883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5314 + ... + 13167.

It is an arithmetic number, because the mean of its divisors is an integer number (3992112).

Almost surely, 2^72574887 is an apocalyptic number.

72574887 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

72574887 is a deficient number, since it is larger than the sum of its proper divisors (55172697).

72574887 is a wasteful number, since it uses less digits than its factorization.

72574887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18519.

The product of its digits is 878080, while the sum is 48.

The square root of 72574887 is about 8519.0895640321. The cubic root of 72574887 is about 417.1210650906.

The spelling of 72574887 in words is "seventy-two million, five hundred seventy-four thousand, eight hundred eighty-seven".