45490664 has 8 divisors (see below), whose sum is σ = 85295010. Its totient is φ = 22745328.

The previous prime is 45490651. The next prime is 45490673. The reversal of 45490664 is 46609454.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 45454564 + 36100 = 6742^2 + 190^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×45490664² = 4138801022321792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2843159 + ... + 2843174.

Almost surely, 2^45490664 is an apocalyptic number.

It is an amenable number.

45490664 is a deficient number, since it is larger than the sum of its proper divisors (39804346).

45490664 is a wasteful number, since it uses less digits than its factorization.

45490664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5686339 (or 5686335 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 45490664 is about 6744.6767157515. The cubic root of 45490664 is about 356.9774300686.

The spelling of 45490664 in words is "forty-five million, four hundred ninety thousand, six hundred sixty-four".