682047581 has 4 divisors (see below), whose sum is σ = 682289664. Its totient is φ = 681805500.

The previous prime is 682047557. The next prime is 682047601. The reversal of 682047581 is 185740286.

682047581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 185740286 = 2 ⋅92870143.

It is a cyclic number.

It is not a de Polignac number, because 682047581 - 2⁶ = 682047517 is a prime.

It is a super-2 number, since 2×682047581² = 930377805495903122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (682047511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116765 + ... + 122466.

It is an arithmetic number, because the mean of its divisors is an integer number (170572416).

Almost surely, 2^682047581 is an apocalyptic number.

It is an amenable number.

682047581 is a deficient number, since it is larger than the sum of its proper divisors (242083).

682047581 is a wasteful number, since it uses less digits than its factorization.

682047581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242082.

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 682047581 is about 26116.0406838403. The cubic root of 682047581 is about 880.2476838103.

The spelling of 682047581 in words is "six hundred eighty-two million, forty-seven thousand, five hundred eighty-one".