682492391 has 8 divisors (see below), whose sum is σ = 780196224. Its totient is φ = 584839800.

The previous prime is 682492313. The next prime is 682492411. The reversal of 682492391 is 193294286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-682492391 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 (682492301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22076 + ... + 43038.

It is an arithmetic number, because the mean of its divisors is an integer number (97524528).

Almost surely, 2^682492391 is an apocalyptic number.

682492391 is a deficient number, since it is larger than the sum of its proper divisors (97703833).

682492391 is a wasteful number, since it uses less digits than its factorization.

682492391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25621.

The product of its digits is 186624, while the sum is 44.

The square root of 682492391 is about 26124.5553263591. Note that the first 3 decimals coincide. The cubic root of 682492391 is about 880.4389988527.

The spelling of 682492391 in words is "six hundred eighty-two million, four hundred ninety-two thousand, three hundred ninety-one".