715820 has 24 divisors (see below), whose sum is σ = 1718304. Its totient is φ = 245376.

The previous prime is 715817. The next prime is 715823. The reversal of 715820 is 28517.

715820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (715817) and next prime (715823).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (715823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2417 + ... + 2696.

It is an arithmetic number, because the mean of its divisors is an integer number (71596).

2⁷¹⁵⁸²⁰ is an apocalyptic number.

715820 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

715820 is an abundant number, since it is smaller than the sum of its proper divisors (1002484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

715820 is a wasteful number, since it uses less digits than its factorization.

715820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129 (or 5127 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 715820 is about 846.0614634883. The cubic root of 715820 is about 89.4543112309.

The spelling of 715820 in words is "seven hundred fifteen thousand, eight hundred twenty".