686290007 has 16 divisors (see below), whose sum is σ = 746468352. Its totient is φ = 627201120.

The previous prime is 686290001. The next prime is 686290037. The reversal of 686290007 is 700092686.

It is not a de Polignac number, because 686290007 - 2⁴ = 686289991 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 (686290001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 752882 + ... + 753792.

It is an arithmetic number, because the mean of its divisors is an integer number (46654272).

Almost surely, 2^686290007 is an apocalyptic number.

686290007 is a deficient number, since it is larger than the sum of its proper divisors (60178345).

686290007 is a wasteful number, since it uses less digits than its factorization.

686290007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 686290007 is about 26197.1373817828. The cubic root of 686290007 is about 882.0689983437.

It can be divided in two parts, 6862 and 90007, that added together give a palindrome (96869).

The spelling of 686290007 in words is "six hundred eighty-six million, two hundred ninety thousand, seven".