667090 has 16 divisors (see below), whose sum is σ = 1264320. Its totient is φ = 252720.

The previous prime is 667081. The next prime is 667091. The reversal of 667090 is 90766.

667090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (667091) 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, 1566 + ... + 1945.

It is an arithmetic number, because the mean of its divisors is an integer number (79020).

2⁶⁶⁷⁰⁹⁰ is an apocalyptic number.

667090 is a deficient number, since it is larger than the sum of its proper divisors (597230).

667090 is a wasteful number, since it uses less digits than its factorization.

667090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3537.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 667090 is about 816.7557774513. The cubic root of 667090 is about 87.3765333476.

The spelling of 667090 in words is "six hundred sixty-seven thousand, ninety".