682661513 has 4 divisors (see below), whose sum is σ = 682987008. Its totient is φ = 682336020.

The previous prime is 682661501. The next prime is 682661519. The reversal of 682661513 is 315166286.

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 cyclic number.

It is not a de Polignac number, because 682661513 - 2⁸ = 682661257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (682661519) 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, 159581 + ... + 163802.

It is an arithmetic number, because the mean of its divisors is an integer number (170746752).

Almost surely, 2^682661513 is an apocalyptic number.

It is an amenable number.

682661513 is a deficient number, since it is larger than the sum of its proper divisors (325495).

682661513 is a wasteful number, since it uses less digits than its factorization.

682661513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325494.

The product of its digits is 51840, while the sum is 38.

The square root of 682661513 is about 26127.7919656446. The cubic root of 682661513 is about 880.5117172736.

The spelling of 682661513 in words is "six hundred eighty-two million, six hundred sixty-one thousand, five hundred thirteen".