715766 has 4 divisors (see below), whose sum is σ = 1073652. Its totient is φ = 357882.

The previous prime is 715753. The next prime is 715777. The reversal of 715766 is 667517.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 667517 = 37 ⋅18041.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 715766.

It is an unprimeable number.

715766 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178940 + ... + 178943.

It is an arithmetic number, because the mean of its divisors is an integer number (268413).

2⁷¹⁵⁷⁶⁶ is an apocalyptic number.

715766 is a deficient number, since it is larger than the sum of its proper divisors (357886).

715766 is a wasteful number, since it uses less digits than its factorization.

715766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357885.

The product of its digits is 8820, while the sum is 32.

The square root of 715766 is about 846.0295503113. The cubic root of 715766 is about 89.4520617574.

The spelling of 715766 in words is "seven hundred fifteen thousand, seven hundred sixty-six".