445712663 has 8 divisors (see below), whose sum is σ = 490694160. Its totient is φ = 401474880.

The previous prime is 445712639. The next prime is 445712671. The reversal of 445712663 is 366217544.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445712663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445712263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184670 + ... + 187067.

It is an arithmetic number, because the mean of its divisors is an integer number (61336770).

Almost surely, 2^445712663 is an apocalyptic number.

445712663 is a deficient number, since it is larger than the sum of its proper divisors (44981497).

445712663 is a wasteful number, since it uses less digits than its factorization.

445712663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371857.

The product of its digits is 120960, while the sum is 38.

The square root of 445712663 is about 21111.9080852490. The cubic root of 445712663 is about 763.8680129578.

The spelling of 445712663 in words is "four hundred forty-five million, seven hundred twelve thousand, six hundred sixty-three".