687473246772 has 72 divisors (see below), whose sum is σ = 1952822586624. Its totient is φ = 202333260096.

The previous prime is 687473246771. The next prime is 687473246791. The reversal of 687473246772 is 277642374786.

687473246772 is a `hidden beast` number, since 6 + 8 + 74 + 7 + 32 + 467 + 72 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687473246771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31923148 + ... + 31944675.

Almost surely, 2^687473246772 is an apocalyptic number.

It is an amenable number.

687473246772 is an abundant number, since it is smaller than the sum of its proper divisors (1265349339852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

687473246772 is a wasteful number, since it uses less digits than its factorization.

687473246772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63867869 (or 63867864 counting only the distinct ones).

The product of its digits is 132765696, while the sum is 63.

The spelling of 687473246772 in words is "six hundred eighty-seven billion, four hundred seventy-three million, two hundred forty-six thousand, seven hundred seventy-two".