615571960 has 64 divisors (see below), whose sum is σ = 1468465920. Its totient is φ = 231828480.

The previous prime is 615571949. The next prime is 615571967. The reversal of 615571960 is 69175516.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (615571967) 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, 39172 + ... + 52588.

It is an arithmetic number, because the mean of its divisors is an integer number (22944780).

Almost surely, 2^615571960 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 615571960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (734232960).

615571960 is an abundant number, since it is smaller than the sum of its proper divisors (852893960).

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

615571960 is a wasteful number, since it uses less digits than its factorization.

615571960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13496 (or 13492 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 615571960 is about 24810.7226819373. The cubic root of 615571960 is about 850.6670473242.

The spelling of 615571960 in words is "six hundred fifteen million, five hundred seventy-one thousand, nine hundred sixty".