687774351 has 8 divisors (see below), whose sum is σ = 1000399104. Its totient is φ = 416832920.

The previous prime is 687774337. The next prime is 687774377. The reversal of 687774351 is 153477786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 687774351 - 2¹⁰ = 687773327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 687774351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687774301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10420791 + ... + 10420856.

It is an arithmetic number, because the mean of its divisors is an integer number (125049888).

Almost surely, 2^687774351 is an apocalyptic number.

687774351 is a deficient number, since it is larger than the sum of its proper divisors (312624753).

687774351 is a wasteful number, since it uses less digits than its factorization.

687774351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20841661.

The product of its digits is 987840, while the sum is 48.

The square root of 687774351 is about 26225.4523507222. The cubic root of 687774351 is about 882.7044687756.

The spelling of 687774351 in words is "six hundred eighty-seven million, seven hundred seventy-four thousand, three hundred fifty-one".