345537664 has 16 divisors (see below), whose sum is σ = 688376070. Its totient is φ = 172768768.

The previous prime is 345537659. The next prime is 345537677. The reversal of 345537664 is 466735543.

It can be written as a sum of positive squares in only one way, i.e., 174451264 + 171086400 = 13208^2 + 13080^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 345537664.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1349629 + ... + 1349884.

Almost surely, 2^345537664 is an apocalyptic number.

It is an amenable number.

345537664 is a deficient number, since it is larger than the sum of its proper divisors (342838406).

345537664 is an equidigital number, since it uses as much as digits as its factorization.

345537664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699527 (or 2699515 counting only the distinct ones).

The product of its digits is 907200, while the sum is 43.

The square root of 345537664 is about 18588.6434147304. The cubic root of 345537664 is about 701.7220621411.

The spelling of 345537664 in words is "three hundred forty-five million, five hundred thirty-seven thousand, six hundred sixty-four".