45408645 has 48 divisors (see below), whose sum is σ = 83246592. Its totient is φ = 22861440.

The previous prime is 45408641. The next prime is 45408667. The reversal of 45408645 is 54680454.

45408645 is a `hidden beast` number, since 4 + 5 + 4 + 0 + 8 + 645 = 666.

It is not a de Polignac number, because 45408645 - 2² = 45408641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45408641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59607 + ... + 60363.

It is an arithmetic number, because the mean of its divisors is an integer number (1734304).

Almost surely, 2^45408645 is an apocalyptic number.

45408645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45408645 is a deficient number, since it is larger than the sum of its proper divisors (37837947).

45408645 is a wasteful number, since it uses less digits than its factorization.

45408645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842 (or 839 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The square root of 45408645 is about 6738.5936960170. The cubic root of 45408645 is about 356.7627593105.

The spelling of 45408645 in words is "forty-five million, four hundred eight thousand, six hundred forty-five".