682776381 has 32 divisors (see below), whose sum is σ = 1109094400. Its totient is φ = 364927680.

The previous prime is 682776361. The next prime is 682776383. The reversal of 682776381 is 183677286.

It is not a de Polignac number, because 682776381 - 2⁵ = 682776349 is a prime.

It is a super-2 number, since 2×682776381² = 932367172902914322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 682776381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (682776383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20691 + ... + 42351.

It is an arithmetic number, because the mean of its divisors is an integer number (34659200).

Almost surely, 2^682776381 is an apocalyptic number.

It is an amenable number.

682776381 is a deficient number, since it is larger than the sum of its proper divisors (426318019).

682776381 is a wasteful number, since it uses less digits than its factorization.

682776381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21769.

The product of its digits is 677376, while the sum is 48.

The square root of 682776381 is about 26129.9900688845. The cubic root of 682776381 is about 880.5611009215.

The spelling of 682776381 in words is "six hundred eighty-two million, seven hundred seventy-six thousand, three hundred eighty-one".