687257162487 has 320 divisors, whose sum is σ = 1305155174400. Its totient is φ = 351543628800.

The previous prime is 687257162483. The next prime is 687257162507. The reversal of 687257162487 is 784261752786.

It is a happy number.

687257162487 is a `hidden beast` number, since 6 + 8 + 7 + 25 + 71 + 62 + 487 = 666.

It is not a de Polignac number, because 687257162487 - 2² = 687257162483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

Its product of digits (63221760) is a multiple of the sum of its prime factors (448).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687257162483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 4551371862 + ... + 4551372012.

It is an arithmetic number, because the mean of its divisors is an integer number (4078609920).

Almost surely, 2^687257162487 is an apocalyptic number.

687257162487 is a deficient number, since it is larger than the sum of its proper divisors (617898011913).

687257162487 is a wasteful number, since it uses less digits than its factorization.

687257162487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 439 counting only the distinct ones).

The product of its digits is 63221760, while the sum is 63.

The spelling of 687257162487 in words is "six hundred eighty-seven billion, two hundred fifty-seven million, one hundred sixty-two thousand, four hundred eighty-seven".