45505664 has 16 divisors (see below), whose sum is σ = 90656070. Its totient is φ = 22752768.

The previous prime is 45505637. The next prime is 45505679. The reversal of 45505664 is 46650554.

It can be written as a sum of positive squares in only one way, i.e., 41473600 + 4032064 = 6440^2 + 2008^2 .

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

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, 177629 + ... + 177884.

Almost surely, 2^45505664 is an apocalyptic number.

It is an amenable number.

45505664 is a deficient number, since it is larger than the sum of its proper divisors (45150406).

45505664 is an equidigital number, since it uses as much as digits as its factorization.

45505664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355527 (or 355515 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 45505664 is about 6745.7886121639. The cubic root of 45505664 is about 357.0166620966.

The spelling of 45505664 in words is "forty-five million, five hundred five thousand, six hundred sixty-four".