687751546432740 has 48 divisors (see below), whose sum is σ = 1954446185694912. Its totient is φ = 180663092793216.

The previous prime is 687751546432703. The next prime is 687751546432777. The reversal of 687751546432740 is 47234645157786.

It is an interprime number because it is at equal distance from previous prime (687751546432703) and next prime (687751546432777).

It is a hoax number, since the sum of its digits (69) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85541233099 + ... + 85541241138.

It is an arithmetic number, because the mean of its divisors is an integer number (40717628868644).

Almost surely, 2^{687751546432740} is an apocalyptic number.

687751546432740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

687751546432740 is an abundant number, since it is smaller than the sum of its proper divisors (1266694639262172).

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

687751546432740 is a wasteful number, since it uses less digits than its factorization.

687751546432740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171082474316 (or 171082474314 counting only the distinct ones).

The product of its (nonzero) digits is 948326400, while the sum is 69.

The spelling of 687751546432740 in words is "six hundred eighty-seven trillion, seven hundred fifty-one billion, five hundred forty-six million, four hundred thirty-two thousand, seven hundred forty".