725766 has 16 divisors (see below), whose sum is σ = 1472304. Its totient is φ = 238464.

The previous prime is 725749. The next prime is 725789. The reversal of 725766 is 667527.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391 + ... + 1266.

It is an arithmetic number, because the mean of its divisors is an integer number (92019).

2⁷²⁵⁷⁶⁶ is an apocalyptic number.

725766 is an abundant number, since it is smaller than the sum of its proper divisors (746538).

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

725766 is a wasteful number, since it uses less digits than its factorization.

725766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735.

The product of its digits is 17640, while the sum is 33.

The square root of 725766 is about 851.9190102351. The cubic root of 725766 is about 89.8667162938.

The spelling of 725766 in words is "seven hundred twenty-five thousand, seven hundred sixty-six".