666229598 has 8 divisors (see below), whose sum is σ = 1001193240. Its totient is φ = 332498520.

The previous prime is 666229589. The next prime is 666229601. The reversal of 666229598 is 895922666.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306788 + ... + 308951.

It is an arithmetic number, because the mean of its divisors is an integer number (125149155).

Almost surely, 2^666229598 is an apocalyptic number.

666229598 is a deficient number, since it is larger than the sum of its proper divisors (334963642).

666229598 is a wasteful number, since it uses less digits than its factorization.

666229598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616282.

The product of its digits is 2799360, while the sum is 53.

The square root of 666229598 is about 25811.4237887026. The cubic root of 666229598 is about 873.3895156768.

The spelling of 666229598 in words is "six hundred sixty-six million, two hundred twenty-nine thousand, five hundred ninety-eight".