687982377 has 8 divisors (see below), whose sum is σ = 917589600. Its totient is φ = 458515040.

The previous prime is 687982369. The next prime is 687982387. The reversal of 687982377 is 773289786.

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 687982377 - 2³ = 687982369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (687982387) 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, 22899 + ... + 43592.

It is an arithmetic number, because the mean of its divisors is an integer number (114698700).

Almost surely, 2^687982377 is an apocalyptic number.

It is an amenable number.

687982377 is a deficient number, since it is larger than the sum of its proper divisors (229607223).

687982377 is a wasteful number, since it uses less digits than its factorization.

687982377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69943.

The product of its digits is 7112448, while the sum is 57.

The square root of 687982377 is about 26229.4181597686. The cubic root of 687982377 is about 882.7934548262.

The spelling of 687982377 in words is "six hundred eighty-seven million, nine hundred eighty-two thousand, three hundred seventy-seven".