686961050 has 24 divisors (see below), whose sum is σ = 1296824736. Its totient is φ = 270681840.

The previous prime is 686961049. The next prime is 686961059. The reversal of 686961050 is 50169686.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 686960989 and 686961007.

It is not an unprimeable number, because it can be changed into a prime (686961059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99182 + ... + 105881.

It is an arithmetic number, because the mean of its divisors is an integer number (54034364).

Almost surely, 2^686961050 is an apocalyptic number.

686961050 is a deficient number, since it is larger than the sum of its proper divisors (609863686).

686961050 is a wasteful number, since it uses less digits than its factorization.

686961050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205142 (or 205137 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 686961050 is about 26209.9418160361. The cubic root of 686961050 is about 882.3563955115.

The spelling of 686961050 in words is "six hundred eighty-six million, nine hundred sixty-one thousand, fifty".