450680945 has 32 divisors (see below), whose sum is σ = 655893504. Its totient is φ = 292780800.

The previous prime is 450680933. The next prime is 450680947. The reversal of 450680945 is 549086054.

It is a happy number.

It is not a de Polignac number, because 450680945 - 2²⁰ = 449632369 is a prime.

It is a super-2 number, since 2×450680945² = 406226628372186050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (450680947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11999 + ... + 32331.

It is an arithmetic number, because the mean of its divisors is an integer number (20496672).

Almost surely, 2^450680945 is an apocalyptic number.

It is an amenable number.

450680945 is a deficient number, since it is larger than the sum of its proper divisors (205212559).

450680945 is a wasteful number, since it uses less digits than its factorization.

450680945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20393.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 450680945 is about 21229.2473959865. The cubic root of 450680945 is about 766.6957669064.

The spelling of 450680945 in words is "four hundred fifty million, six hundred eighty thousand, nine hundred forty-five".