687837950379 has 12 divisors (see below), whose sum is σ = 994019340600. Its totient is φ = 458339109984.

The previous prime is 687837950369. The next prime is 687837950381. The reversal of 687837950379 is 973059738786.

687837950379 is a `hidden beast` number, since 6 + 87 + 8 + 37 + 9 + 503 + 7 + 9 = 666.

It is not a de Polignac number, because 687837950379 - 2¹² = 687837946283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (687837950309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18273789 + ... + 18311390.

It is an arithmetic number, because the mean of its divisors is an integer number (82834945050).

Almost surely, 2^687837950379 is an apocalyptic number.

687837950379 is a deficient number, since it is larger than the sum of its proper divisors (306181390221).

687837950379 is a wasteful number, since it uses less digits than its factorization.

687837950379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36587274 (or 36587271 counting only the distinct ones).

The product of its (nonzero) digits is 480090240, while the sum is 72.

The spelling of 687837950379 in words is "six hundred eighty-seven billion, eight hundred thirty-seven million, nine hundred fifty thousand, three hundred seventy-nine".