665074 has 16 divisors (see below), whose sum is σ = 1092096. Its totient is φ = 302400.

The previous prime is 665069. The next prime is 665089. The reversal of 665074 is 470566.

665074 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 739 + ... + 1369.

It is an arithmetic number, because the mean of its divisors is an integer number (68256).

2⁶⁶⁵⁰⁷⁴ is an apocalyptic number.

665074 is a deficient number, since it is larger than the sum of its proper divisors (427022).

665074 is a wasteful number, since it uses less digits than its factorization.

665074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 665074 is about 815.5206925640. The cubic root of 665074 is about 87.2884248778.

It can be divided in two parts, 6650 and 74, that added together give a square (6724 = 82²).

The spelling of 665074 in words is "six hundred sixty-five thousand, seventy-four".