447075664 has 20 divisors (see below), whose sum is σ = 989953504. Its totient is φ = 191603808.

The previous prime is 447075661. The next prime is 447075667. The reversal of 447075664 is 466570744.

It is an interprime number because it is at equal distance from previous prime (447075661) and next prime (447075667).

It is a self number, because there is not a number n which added to its sum of digits gives 447075664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447075661) 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, 1995762 + ... + 1995985.

Almost surely, 2^447075664 is an apocalyptic number.

It is an amenable number.

447075664 is an abundant number, since it is smaller than the sum of its proper divisors (542877840).

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

447075664 is a wasteful number, since it uses less digits than its factorization.

447075664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3991762 (or 3991756 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 43.

The square root of 447075664 is about 21144.1638283475. The cubic root of 447075664 is about 764.6458633985.

The spelling of 447075664 in words is "four hundred forty-seven million, seventy-five thousand, six hundred sixty-four".