390635 has 8 divisors (see below), whose sum is σ = 535776. Its totient is φ = 267840.

The previous prime is 390581. The next prime is 390647. The reversal of 390635 is 536093.

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

It is a de Polignac number, because none of the positive numbers 2^k-390635 is a prime.

It is a Duffinian 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, 5546 + ... + 5615.

It is an arithmetic number, because the mean of its divisors is an integer number (66972).

2³⁹⁰⁶³⁵ is an apocalyptic number.

390635 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

390635 is a deficient number, since it is larger than the sum of its proper divisors (145141).

390635 is a wasteful number, since it uses less digits than its factorization.

390635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11173.

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 390635 is about 625.0079999488. The cubic root of 390635 is about 73.1010672404.

The spelling of 390635 in words is "three hundred ninety thousand, six hundred thirty-five".