345660665 has 8 divisors (see below), whose sum is σ = 474048960. Its totient is φ = 237024432.

The previous prime is 345660649. The next prime is 345660671. The reversal of 345660665 is 566066543.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 345660665 - 2⁴ = 345660649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4937975 + ... + 4938044.

It is an arithmetic number, because the mean of its divisors is an integer number (59256120).

Almost surely, 2^345660665 is an apocalyptic number.

345660665 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

345660665 is a deficient number, since it is larger than the sum of its proper divisors (128388295).

345660665 is an equidigital number, since it uses as much as digits as its factorization.

345660665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9876031.

The product of its (nonzero) digits is 388800, while the sum is 41.

The square root of 345660665 is about 18591.9516189130. The cubic root of 345660665 is about 701.8053162354.

The spelling of 345660665 in words is "three hundred forty-five million, six hundred sixty thousand, six hundred sixty-five".