615085 has 4 divisors (see below), whose sum is σ = 738108. Its totient is φ = 492064.

The previous prime is 615067. The next prime is 615101. The reversal of 615085 is 580516.

615085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 298116 + 316969 = 546^2 + 563^2 .

It is a cyclic number.

It is not a de Polignac number, because 615085 - 2⁵ = 615053 is a prime.

It is a Duffinian number.

615085 is a lucky number.

It is a congruent number.

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, 61504 + ... + 61513.

It is an arithmetic number, because the mean of its divisors is an integer number (184527).

2⁶¹⁵⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

615085 is a deficient number, since it is larger than the sum of its proper divisors (123023).

615085 is a wasteful number, since it uses less digits than its factorization.

615085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123022.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 615085 is about 784.2735492161. The cubic root of 615085 is about 85.0442675991.

The spelling of 615085 in words is "six hundred fifteen thousand, eighty-five".