45645644 has 12 divisors (see below), whose sum is σ = 87141768. Its totient is φ = 20748000.

The previous prime is 45645643. The next prime is 45645653. The reversal of 45645644 is 44654654.

It is a junction number, because it is equal to n+sod(n) for n = 45645598 and 45645607.

It is not an unprimeable number, because it can be changed into a prime (45645643) 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, 518657 + ... + 518744.

It is an arithmetic number, because the mean of its divisors is an integer number (7261814).

Almost surely, 2^45645644 is an apocalyptic number.

45645644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

45645644 is a deficient number, since it is larger than the sum of its proper divisors (41496124).

45645644 is a wasteful number, since it uses less digits than its factorization.

45645644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037416 (or 1037414 counting only the distinct ones).

The product of its digits is 230400, while the sum is 38.

The square root of 45645644 is about 6756.1560076718. The cubic root of 45645644 is about 357.3823604329.

The spelling of 45645644 in words is "forty-five million, six hundred forty-five thousand, six hundred forty-four".