686961035 has 4 divisors (see below), whose sum is σ = 824353248. Its totient is φ = 549568824.

The previous prime is 686961001. The next prime is 686961049. The reversal of 686961035 is 530169686.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 686961035 - 2⁸ = 686960779 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68696099 + ... + 68696108.

It is an arithmetic number, because the mean of its divisors is an integer number (206088312).

Almost surely, 2^686961035 is an apocalyptic number.

686961035 is a deficient number, since it is larger than the sum of its proper divisors (137392213).

686961035 is a wasteful number, since it uses less digits than its factorization.

686961035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137392212.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 686961035 is about 26209.9415298852. The cubic root of 686961035 is about 882.3563890894.

The spelling of 686961035 in words is "six hundred eighty-six million, nine hundred sixty-one thousand, thirty-five".