615960 has 96 divisors (see below), whose sum is σ = 2106000. Its totient is φ = 155904.

The previous prime is 615949. The next prime is 615971. The reversal of 615960 is 69516.

It is an interprime number because it is at equal distance from previous prime (615949) and next prime (615971).

It is a congruent number.

It is an unprimeable number.

615960 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10411 + ... + 10469.

2⁶¹⁵⁹⁶⁰ is an apocalyptic number.

615960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 615960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1053000).

615960 is an abundant number, since it is smaller than the sum of its proper divisors (1490040).

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

615960 is a wasteful number, since it uses less digits than its factorization.

615960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 615960 is about 784.8311920407. The cubic root of 615960 is about 85.0845755651.

The spelling of 615960 in words is "six hundred fifteen thousand, nine hundred sixty".