667402 has 4 divisors (see below), whose sum is σ = 1001106. Its totient is φ = 333700.

The previous prime is 667379. The next prime is 667417. The reversal of 667402 is 204766.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 408321 + 259081 = 639^2 + 509^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166849 + ... + 166852.

2⁶⁶⁷⁴⁰² is an apocalyptic number.

667402 is a deficient number, since it is larger than the sum of its proper divisors (333704).

667402 is a wasteful number, since it uses less digits than its factorization.

667402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333703.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 667402 is about 816.9467546909. The cubic root of 667402 is about 87.3901533137.

The spelling of 667402 in words is "six hundred sixty-seven thousand, four hundred two".