82098621 has 18 divisors (see below), whose sum is σ = 130349310. Its totient is φ = 49756080.

The previous prime is 82098607. The next prime is 82098629. The reversal of 82098621 is 12689028.

82098621 is a `hidden beast` number, since 8 + 20 + 9 + 8 + 621 = 666.

It can be written as a sum of positive squares in only one way, i.e., 60140025 + 21958596 = 7755^2 + 4686^2 .

It is not a de Polignac number, because 82098621 - 2⁷ = 82098493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82098629) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 36606 + ... + 38783.

Almost surely, 2^82098621 is an apocalyptic number.

It is an amenable number.

82098621 is a deficient number, since it is larger than the sum of its proper divisors (48250689).

82098621 is a wasteful number, since it uses less digits than its factorization.

82098621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75417 (or 75403 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 82098621 is about 9060.8289355886. The cubic root of 82098621 is about 434.6222483555.

The spelling of 82098621 in words is "eighty-two million, ninety-eight thousand, six hundred twenty-one".