45665320 has 16 divisors (see below), whose sum is σ = 102747060. Its totient is φ = 18266112.

The previous prime is 45665317. The next prime is 45665339. The reversal of 45665320 is 2356654.

It can be written as a sum of positive squares in 2 ways, for example, as 43480836 + 2184484 = 6594^2 + 1478^2 .

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 570777 + ... + 570856.

Almost surely, 2^45665320 is an apocalyptic number.

45665320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45665320 is an abundant number, since it is smaller than the sum of its proper divisors (57081740).

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

45665320 is a wasteful number, since it uses less digits than its factorization.

45665320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141644 (or 1141640 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 45665320 is about 6757.6120042512. The cubic root of 45665320 is about 357.4337041068.

The spelling of 45665320 in words is "forty-five million, six hundred sixty-five thousand, three hundred twenty".