715645 has 24 divisors (see below), whose sum is σ = 1050624. Its totient is φ = 465696.

The previous prime is 715643. The next prime is 715651. The reversal of 715645 is 546517.

715645 = 263² + 264² + ... + 272².

It is not a de Polignac number, because 715645 - 2¹ = 715643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (715643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5572 + ... + 5698.

It is an arithmetic number, because the mean of its divisors is an integer number (43776).

2⁷¹⁵⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

715645 is a deficient number, since it is larger than the sum of its proper divisors (334979).

715645 is a wasteful number, since it uses less digits than its factorization.

715645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 162 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 715645 is about 845.9580367843. The cubic root of 715645 is about 89.4470208598.

The spelling of 715645 in words is "seven hundred fifteen thousand, six hundred forty-five".