715905 has 16 divisors (see below), whose sum is σ = 1272960. Its totient is φ = 381744.

The previous prime is 715903. The next prime is 715909. The reversal of 715905 is 509517.

715905 is a `hidden beast` number, since 71 + 590 + 5 = 666.

It is not a de Polignac number, because 715905 - 2¹ = 715903 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (715903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2517 + ... + 2786.

It is an arithmetic number, because the mean of its divisors is an integer number (79560).

2⁷¹⁵⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

715905 is a deficient number, since it is larger than the sum of its proper divisors (557055).

715905 is a wasteful number, since it uses less digits than its factorization.

715905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5317 (or 5311 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 27.

The square root of 715905 is about 846.1116947543. Note that the first 3 decimals coincide. The cubic root of 715905 is about 89.4578518396.

The spelling of 715905 in words is "seven hundred fifteen thousand, nine hundred five".