615485 has 16 divisors (see below), whose sum is σ = 843696. Its totient is φ = 427008.

The previous prime is 615479. The next prime is 615491. The reversal of 615485 is 584516.

It is a happy number.

615485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (615479) and next prime (615491).

It can be written as a sum of positive squares in 8 ways, for example, as 76729 + 538756 = 277^2 + 734^2 .

It is a cyclic number.

It is not a de Polignac number, because 615485 - 2⁸ = 615229 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 827 + ... + 1383.

It is an arithmetic number, because the mean of its divisors is an integer number (52731).

2⁶¹⁵⁴⁸⁵ is an apocalyptic number.

615485 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

615485 is a deficient number, since it is larger than the sum of its proper divisors (228211).

615485 is a wasteful number, since it uses less digits than its factorization.

615485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592.

The product of its digits is 4800, while the sum is 29.

The square root of 615485 is about 784.5285208327. The cubic root of 615485 is about 85.0626988379.

The spelling of 615485 in words is "six hundred fifteen thousand, four hundred eighty-five".