345665651 has 4 divisors (see below), whose sum is σ = 363858600. Its totient is φ = 327472704.

The previous prime is 345665633. The next prime is 345665657. The reversal of 345665651 is 156566543.

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

It is a cyclic number.

It is not a de Polignac number, because 345665651 - 2¹⁸ = 345403507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 345665599 and 345665608.

It is not an unprimeable number, because it can be changed into a prime (345665657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9096446 + ... + 9096483.

It is an arithmetic number, because the mean of its divisors is an integer number (90964650).

Almost surely, 2^345665651 is an apocalyptic number.

345665651 is a deficient number, since it is larger than the sum of its proper divisors (18192949).

345665651 is a wasteful number, since it uses less digits than its factorization.

345665651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18192948.

The product of its digits is 324000, while the sum is 41.

The square root of 345665651 is about 18592.0857087095. The cubic root of 345665651 is about 701.8086906281.

The spelling of 345665651 in words is "three hundred forty-five million, six hundred sixty-five thousand, six hundred fifty-one".