45635666 has 4 divisors (see below), whose sum is σ = 68453502. Its totient is φ = 22817832.

The previous prime is 45635651. The next prime is 45635669. The reversal of 45635666 is 66653654.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 43890625 + 1745041 = 6625^2 + 1321^2 .

It is a super-2 number, since 2×45635666² = 4165228022527112, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45635669) by changing a digit.

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, 11408915 + ... + 11408918.

Almost surely, 2^45635666 is an apocalyptic number.

45635666 is a deficient number, since it is larger than the sum of its proper divisors (22817836).

45635666 is a wasteful number, since it uses less digits than its factorization.

45635666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22817835.

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

The square root of 45635666 is about 6755.4175296572. The cubic root of 45635666 is about 357.3563176334.

The spelling of 45635666 in words is "forty-five million, six hundred thirty-five thousand, six hundred sixty-six".