687599099 has 8 divisors (see below), whose sum is σ = 782721792. Its totient is φ = 597912040.

The previous prime is 687599093. The next prime is 687599161. The reversal of 687599099 is 990995786.

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

It is not a de Polignac number, because 687599099 - 2⁸ = 687598843 is a prime.

It is a super-2 number, since 2×687599099² = 945585041891223602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (687599093) 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, 1358639 + ... + 1359144.

It is an arithmetic number, because the mean of its divisors is an integer number (97840224).

Almost surely, 2^687599099 is an apocalyptic number.

687599099 is a deficient number, since it is larger than the sum of its proper divisors (95122693).

687599099 is a wasteful number, since it uses less digits than its factorization.

687599099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717817.

The product of its (nonzero) digits is 11022480, while the sum is 62.

The square root of 687599099 is about 26222.1108799425. The cubic root of 687599099 is about 882.6294883383.

The spelling of 687599099 in words is "six hundred eighty-seven million, five hundred ninety-nine thousand, ninety-nine".