682094021 has 4 divisors (see below), whose sum is σ = 779536032. Its totient is φ = 584652012.

The previous prime is 682093991. The next prime is 682094059. The reversal of 682094021 is 120490286.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-682094021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (682097021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48720995 + ... + 48721008.

It is an arithmetic number, because the mean of its divisors is an integer number (194884008).

Almost surely, 2^682094021 is an apocalyptic number.

It is an amenable number.

682094021 is a deficient number, since it is larger than the sum of its proper divisors (97442011).

682094021 is an equidigital number, since it uses as much as digits as its factorization.

682094021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97442010.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 682094021 is about 26116.9297774451. The cubic root of 682094021 is about 880.2676617785.

The spelling of 682094021 in words is "six hundred eighty-two million, ninety-four thousand, twenty-one".