682842021 has 16 divisors (see below), whose sum is σ = 932441664. Its totient is φ = 444253824.

The previous prime is 682841989. The next prime is 682842023. The reversal of 682842021 is 120248286.

It is a happy number.

It is not a de Polignac number, because 682842021 - 2⁵ = 682841989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (682842023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274435 + ... + 276911.

It is an arithmetic number, because the mean of its divisors is an integer number (58277604).

Almost surely, 2^682842021 is an apocalyptic number.

It is an amenable number.

682842021 is a deficient number, since it is larger than the sum of its proper divisors (249599643).

682842021 is a wasteful number, since it uses less digits than its factorization.

682842021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4660.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 682842021 is about 26131.2460667302. The cubic root of 682842021 is about 880.5893181535.

The spelling of 682842021 in words is "six hundred eighty-two million, eight hundred forty-two thousand, twenty-one".