615972 has 24 divisors (see below), whose sum is σ = 1642816. Its totient is φ = 175968.

The previous prime is 615971. The next prime is 615997. The reversal of 615972 is 279516.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (615971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3583 + ... + 3750.

2⁶¹⁵⁹⁷² is an apocalyptic number.

It is an amenable number.

615972 is an abundant number, since it is smaller than the sum of its proper divisors (1026844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

615972 is a wasteful number, since it uses less digits than its factorization.

615972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7347 (or 7345 counting only the distinct ones).

The product of its digits is 3780, while the sum is 30.

The square root of 615972 is about 784.8388369595. The cubic root of 615972 is about 85.0851280946.

The spelling of 615972 in words is "six hundred fifteen thousand, nine hundred seventy-two".