390615 has 8 divisors (see below), whose sum is σ = 625008. Its totient is φ = 208320.

The previous prime is 390581. The next prime is 390647. The reversal of 390615 is 516093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 390615 - 2⁷ = 390487 is a prime.

It is a nialpdrome in base 5.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13006 + ... + 13035.

It is an arithmetic number, because the mean of its divisors is an integer number (78126).

2³⁹⁰⁶¹⁵ is an apocalyptic number.

390615 is a deficient number, since it is larger than the sum of its proper divisors (234393).

390615 is a wasteful number, since it uses less digits than its factorization.

390615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26049.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 390615 is about 624.9919999488. The cubic root of 390615 is about 73.0998196595.

The spelling of 390615 in words is "three hundred ninety thousand, six hundred fifteen".