682528687 has 4 divisors (see below), whose sum is σ = 682594000. Its totient is φ = 682463376.

The previous prime is 682528673. The next prime is 682528709. The reversal of 682528687 is 786825286.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a 4-Lehmer number, since φ(682528687) divides (682528687-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 682528687 - 2⁷ = 682528559 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 (682528667) 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, 13062 + ... + 39187.

It is an arithmetic number, because the mean of its divisors is an integer number (170648500).

It is a Poulet number, since it divides 2^682528686-1.

Almost surely, 2^682528687 is an apocalyptic number.

682528687 is the 13063-rd decagonal number.

682528687 is a deficient number, since it is larger than the sum of its proper divisors (65313).

682528687 is a wasteful number, since it uses less digits than its factorization.

682528687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65312.

The product of its digits is 2580480, while the sum is 52.

The square root of 682528687 is about 26125.2499892346. The cubic root of 682528687 is about 880.4546062782.

The spelling of 682528687 in words is "six hundred eighty-two million, five hundred twenty-eight thousand, six hundred eighty-seven".