687352620508 has 6 divisors (see below), whose sum is σ = 1202867085896. Its totient is φ = 343676310252.

The previous prime is 687352620481. The next prime is 687352620517. The reversal of 687352620508 is 805026253786.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85919077560 + ... + 85919077567.

Almost surely, 2^687352620508 is an apocalyptic number.

It is an amenable number.

687352620508 is a deficient number, since it is larger than the sum of its proper divisors (515514465388).

687352620508 is a wasteful number, since it uses less digits than its factorization.

687352620508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171838155131 (or 171838155129 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 52.

The spelling of 687352620508 in words is "six hundred eighty-seven billion, three hundred fifty-two million, six hundred twenty thousand, five hundred eight".