453306681 has 27 divisors (see below), whose sum is σ = 673463973. Its totient is φ = 293815800.

The previous prime is 453306673. The next prime is 453306697. The reversal of 453306681 is 186603354.

The square root of 453306681 is 21291.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 453306681 - 2³ = 453306673 is a prime.

It is a super-2 number, since 2×453306681² = 410973894078471522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (453306181) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3001956 + ... + 3002106.

Almost surely, 2^453306681 is an apocalyptic number.

453306681 is the 21291-st square number.

453306681 is the 10646-th centered octagonal number.

It is an amenable number.

453306681 is a deficient number, since it is larger than the sum of its proper divisors (220157292).

453306681 is an equidigital number, since it uses as much as digits as its factorization.

453306681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The cubic root of 453306681 is about 768.1818467909.

Multiplying 453306681 by its sum of digits (36), we get a square (16319040516 = 127746²).

The spelling of 453306681 in words is "four hundred fifty-three million, three hundred six thousand, six hundred eighty-one".