686787350 has 12 divisors (see below), whose sum is σ = 1277424564. Its totient is φ = 274714920.

The previous prime is 686787347. The next prime is 686787391. The reversal of 686787350 is 53787686.

It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 13735747 = 686787350 / (6 + 8 + 6 + 7 + 8 + 7 + 3 + 5 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6867824 + ... + 6867923.

It is an arithmetic number, because the mean of its divisors is an integer number (106452047).

Almost surely, 2^686787350 is an apocalyptic number.

686787350 is a deficient number, since it is larger than the sum of its proper divisors (590637214).

686787350 is a wasteful number, since it uses less digits than its factorization.

686787350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13735759 (or 13735754 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 50.

The square root of 686787350 is about 26206.6279784332. The cubic root of 686787350 is about 882.2820204915.

The spelling of 686787350 in words is "six hundred eighty-six million, seven hundred eighty-seven thousand, three hundred fifty".