615480 has 64 divisors (see below), whose sum is σ = 1935360. Its totient is φ = 156288.

The previous prime is 615479. The next prime is 615491. The reversal of 615480 is 84516.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 615480.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 615480.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2649 + ... + 2871.

It is an arithmetic number, because the mean of its divisors is an integer number (30240).

2⁶¹⁵⁴⁸⁰ is an apocalyptic number.

615480 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 615480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (967680).

615480 is an abundant number, since it is smaller than the sum of its proper divisors (1319880).

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

615480 is a wasteful number, since it uses less digits than its factorization.

615480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 615480 is about 784.5253341990. The cubic root of 615480 is about 85.0624684967.

Adding to 615480 its reverse (84516), we get a palindrome (699996).

The spelling of 615480 in words is "six hundred fifteen thousand, four hundred eighty".