45665478 has 16 divisors (see below), whose sum is σ = 101478960. Its totient is φ = 15221808.

The previous prime is 45665471. The next prime is 45665483. The reversal of 45665478 is 87456654.

45665478 is a `hidden beast` number, since 45 + 66 + 547 + 8 = 666.

45665478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45665471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422775 + ... + 422882.

It is an arithmetic number, because the mean of its divisors is an integer number (6342435).

Almost surely, 2^45665478 is an apocalyptic number.

45665478 is an abundant number, since it is smaller than the sum of its proper divisors (55813482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45665478 is a wasteful number, since it uses less digits than its factorization.

45665478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845668 (or 845662 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 45665478 is about 6757.6236947613. The cubic root of 45665478 is about 357.4341163413.

The spelling of 45665478 in words is "forty-five million, six hundred sixty-five thousand, four hundred seventy-eight".