715780 has 24 divisors (see below), whose sum is σ = 1619352. Its totient is φ = 264192.

The previous prime is 715777. The next prime is 715789. The reversal of 715780 is 87517.

715780 = T₃₃ + T₃₄ + ... + T₁₆₂.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 101124 + 614656 = 318^2 + 784^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (715789) 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, 1117 + ... + 1636.

It is an arithmetic number, because the mean of its divisors is an integer number (67473).

2⁷¹⁵⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

715780 is an abundant number, since it is smaller than the sum of its proper divisors (903572).

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

715780 is a wasteful number, since it uses less digits than its factorization.

715780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775 (or 2773 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 715780 is about 846.0378242136. The cubic root of 715780 is about 89.4526449651.

The spelling of 715780 in words is "seven hundred fifteen thousand, seven hundred eighty".