8640454 has 16 divisors (see below), whose sum is σ = 13931568. Its totient is φ = 4004352.

The previous prime is 8640451. The next prime is 8640481. The reversal of 8640454 is 4540468.

It is a super-2 number, since 2×8640454² = 149314890652232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8640451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382 + ... + 4174.

It is an arithmetic number, because the mean of its divisors is an integer number (870723).

Almost surely, 2^8640454 is an apocalyptic number.

8640454 is a deficient number, since it is larger than the sum of its proper divisors (5291114).

8640454 is a wasteful number, since it uses less digits than its factorization.

8640454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3879.

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 8640454 is about 2939.4649172936. The cubic root of 8640454 is about 205.2007076544.

The spelling of 8640454 in words is "eight million, six hundred forty thousand, four hundred fifty-four".