345660666 has 32 divisors (see below), whose sum is σ = 745512768. Its totient is φ = 106212480.

The previous prime is 345660649. The next prime is 345660671. The reversal of 345660666 is 666066543.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64261 + ... + 69431.

It is an arithmetic number, because the mean of its divisors is an integer number (23297274).

Almost surely, 2^345660666 is an apocalyptic number.

345660666 is an abundant number, since it is smaller than the sum of its proper divisors (399852102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

345660666 is a wasteful number, since it uses less digits than its factorization.

345660666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6046.

The product of its (nonzero) digits is 466560, while the sum is 42.

The square root of 345660666 is about 18591.9516458063. The cubic root of 345660666 is about 701.8053169122.

The spelling of 345660666 in words is "three hundred forty-five million, six hundred sixty thousand, six hundred sixty-six".