687472822 has 8 divisors (see below), whose sum is σ = 1031335272. Its totient is φ = 343694400.

The previous prime is 687472813. The next prime is 687472861. The reversal of 687472822 is 228274786.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6822 + ... + 37702.

It is an arithmetic number, because the mean of its divisors is an integer number (128916909).

Almost surely, 2^687472822 is an apocalyptic number.

687472822 is a deficient number, since it is larger than the sum of its proper divisors (343862450).

687472822 is a wasteful number, since it uses less digits than its factorization.

687472822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42014.

The product of its digits is 602112, while the sum is 46.

The square root of 687472822 is about 26219.7029350067. The cubic root of 687472822 is about 882.5754536410.

The spelling of 687472822 in words is "six hundred eighty-seven million, four hundred seventy-two thousand, eight hundred twenty-two".