687790411 has 12 divisors (see below), whose sum is σ = 872818200. Its totient is φ = 535940160.

The previous prime is 687790349. The next prime is 687790417. The reversal of 687790411 is 114097786.

It is not a de Polignac number, because 687790411 - 2⁷ = 687790283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (687790417) 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, 637486 + ... + 638563.

It is an arithmetic number, because the mean of its divisors is an integer number (72734850).

Almost surely, 2^687790411 is an apocalyptic number.

687790411 is a deficient number, since it is larger than the sum of its proper divisors (185027789).

687790411 is a wasteful number, since it uses less digits than its factorization.

687790411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276074 (or 1276067 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 687790411 is about 26225.7585400308. The cubic root of 687790411 is about 882.7113393059.

The spelling of 687790411 in words is "six hundred eighty-seven million, seven hundred ninety thousand, four hundred eleven".