686887053 has 16 divisors (see below), whose sum is σ = 925747200. Its totient is φ = 453002544.

The previous prime is 686887051. The next prime is 686887073. The reversal of 686887053 is 350788686.

It is not a de Polignac number, because 686887053 - 2¹ = 686887051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 686886987 and 686887005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686887051) 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, 105898 + ... + 112196.

It is an arithmetic number, because the mean of its divisors is an integer number (57859200).

Almost surely, 2^686887053 is an apocalyptic number.

It is an amenable number.

686887053 is a deficient number, since it is larger than the sum of its proper divisors (238860147).

686887053 is a wasteful number, since it uses less digits than its factorization.

686887053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6688.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The square root of 686887053 is about 26208.5301571836. The cubic root of 686887053 is about 882.3247129435.

The spelling of 686887053 in words is "six hundred eighty-six million, eight hundred eighty-seven thousand, fifty-three".