453988665 has 64 divisors (see below), whose sum is σ = 874944000. Its totient is φ = 222020352.

The previous prime is 453988663. The next prime is 453988699. The reversal of 453988665 is 566889354.

It is a happy number.

It is not a de Polignac number, because 453988665 - 2¹ = 453988663 is a prime.

It is a super-2 number, since 2×453988665² = 412211415896964450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (453988663) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 292311 + ... + 293859.

It is an arithmetic number, because the mean of its divisors is an integer number (13671000).

Almost surely, 2^453988665 is an apocalyptic number.

453988665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

453988665 is a deficient number, since it is larger than the sum of its proper divisors (420955335).

453988665 is a wasteful number, since it uses less digits than its factorization.

453988665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743 (or 1737 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The square root of 453988665 is about 21307.0097620478. The cubic root of 453988665 is about 768.5668879755.

The spelling of 453988665 in words is "four hundred fifty-three million, nine hundred eighty-eight thousand, six hundred sixty-five".