686950772 has 12 divisors (see below), whose sum is σ = 1215671940. Its totient is φ = 339615936.

The previous prime is 686950727. The next prime is 686950787. The reversal of 686950772 is 277059686.

It can be written as a sum of positive squares in 2 ways, for example, as 70123876 + 616826896 = 8374^2 + 24836^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 686950772.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 964463 + ... + 965174.

It is an arithmetic number, because the mean of its divisors is an integer number (101305995).

Almost surely, 2^686950772 is an apocalyptic number.

It is an amenable number.

686950772 is a deficient number, since it is larger than the sum of its proper divisors (528721168).

686950772 is a wasteful number, since it uses less digits than its factorization.

686950772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929730 (or 1929728 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 50.

The square root of 686950772 is about 26209.7457446653. The cubic root of 686950772 is about 882.3519950174.

The spelling of 686950772 in words is "six hundred eighty-six million, nine hundred fifty thousand, seven hundred seventy-two".