82644453 has 6 divisors (see below), whose sum is σ = 119375334. Its totient is φ = 55096296.

The previous prime is 82644407. The next prime is 82644467. The reversal of 82644453 is 35444628.

82644453 is a `hidden beast` number, since 8 + 2 + 644 + 4 + 5 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 76003524 + 6640929 = 8718^2 + 2577^2 .

It is not a de Polignac number, because 82644453 - 2⁶ = 82644389 is a prime.

It is a super-2 number, since 2×82644453² = 13660211223338418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82644493) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4591350 + ... + 4591367.

It is an arithmetic number, because the mean of its divisors is an integer number (19895889).

Almost surely, 2^82644453 is an apocalyptic number.

It is an amenable number.

82644453 is a deficient number, since it is larger than the sum of its proper divisors (36730881).

82644453 is a wasteful number, since it uses less digits than its factorization.

82644453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9182723 (or 9182720 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 82644453 is about 9090.8994604494. The cubic root of 82644453 is about 435.5833157455.

The spelling of 82644453 in words is "eighty-two million, six hundred forty-four thousand, four hundred fifty-three".