450681 has 16 divisors (see below), whose sum is σ = 749568. Its totient is φ = 234000.

The previous prime is 450677. The next prime is 450691. The reversal of 450681 is 186054.

It is not a de Polignac number, because 450681 - 2² = 450677 is a prime.

It is a super-2 number, since 2×450681² = 406226727522, which contains 22 as substring.

450681 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 450681.

It is not an unprimeable number, because it can be changed into a prime (450601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 745 + ... + 1206.

It is an arithmetic number, because the mean of its divisors is an integer number (46848).

2⁴⁵⁰⁶⁸¹ is an apocalyptic number.

It is an amenable number.

450681 is a deficient number, since it is larger than the sum of its proper divisors (298887).

450681 is a wasteful number, since it uses less digits than its factorization.

450681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 450681 is about 671.3277887888. The cubic root of 450681 is about 76.6695798095.

The spelling of 450681 in words is "four hundred fifty thousand, six hundred eighty-one".