687377625 has 64 divisors (see below), whose sum is σ = 1265891328. Its totient is φ = 328440000.

The previous prime is 687377591. The next prime is 687377629. The reversal of 687377625 is 526773786.

687377625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 687377625 - 2¹⁰ = 687376601 is a prime.

It is a super-3 number, since 3×687377625³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (687377629) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 291702 + ... + 294048.

It is an arithmetic number, because the mean of its divisors is an integer number (19779552).

Almost surely, 2^687377625 is an apocalyptic number.

It is an amenable number.

687377625 is a deficient number, since it is larger than the sum of its proper divisors (578513703).

687377625 is a wasteful number, since it uses less digits than its factorization.

687377625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447 (or 2437 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 51.

The square root of 687377625 is about 26217.8875007122. The cubic root of 687377625 is about 882.5347138905.

The spelling of 687377625 in words is "six hundred eighty-seven million, three hundred seventy-seven thousand, six hundred twenty-five".