615488 has 28 divisors (see below), whose sum is σ = 1249680. Its totient is φ = 300672.

The previous prime is 615479. The next prime is 615491. The reversal of 615488 is 884516.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3695 + ... + 3857.

2⁶¹⁵⁴⁸⁸ 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 615488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (624840).

615488 is an abundant number, since it is smaller than the sum of its proper divisors (634192).

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

615488 is a wasteful number, since it uses less digits than its factorization.

615488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 224 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 615488 is about 784.5304328068. The cubic root of 615488 is about 85.0628370420.

The spelling of 615488 in words is "six hundred fifteen thousand, four hundred eighty-eight".