445640560 has 40 divisors (see below), whose sum is σ = 1037255040. Its totient is φ = 178060032.

The previous prime is 445640557. The next prime is 445640581. The reversal of 445640560 is 65046544.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×445640560² = 397191017434227200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86209 + ... + 91231.

It is an arithmetic number, because the mean of its divisors is an integer number (25931376).

Almost surely, 2^445640560 is an apocalyptic number.

445640560 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

445640560 is an abundant number, since it is smaller than the sum of its proper divisors (591614480).

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

445640560 is a wasteful number, since it uses less digits than its factorization.

445640560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6145 (or 6139 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 445640560 is about 21110.2003780163. The cubic root of 445640560 is about 763.8268203913.

The spelling of 445640560 in words is "four hundred forty-five million, six hundred forty thousand, five hundred sixty".