666402362 has 4 divisors (see below), whose sum is σ = 999603546. Its totient is φ = 333201180.

The previous prime is 666402307. The next prime is 666402377. The reversal of 666402362 is 263204666.

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., 535505881 + 130896481 = 23141^2 + 11441^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166600589 + ... + 166600592.

Almost surely, 2^666402362 is an apocalyptic number.

666402362 is a deficient number, since it is larger than the sum of its proper divisors (333201184).

666402362 is a wasteful number, since it uses less digits than its factorization.

666402362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333201183.

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 666402362 is about 25814.7702294636. The cubic root of 666402362 is about 873.4650037798.

The spelling of 666402362 in words is "six hundred sixty-six million, four hundred two thousand, three hundred sixty-two".