687154252 has 12 divisors (see below), whose sum is σ = 1202813416. Its totient is φ = 343493280.

The previous prime is 687154157. The next prime is 687154271. The reversal of 687154252 is 252451786.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249 + ... + 37072.

Almost surely, 2^687154252 is an apocalyptic number.

It is an amenable number.

687154252 is a deficient number, since it is larger than the sum of its proper divisors (515659164).

687154252 is a wasteful number, since it uses less digits than its factorization.

687154252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41928 (or 41926 counting only the distinct ones).

The product of its digits is 134400, while the sum is 40.

The square root of 687154252 is about 26213.6272194445. The cubic root of 687154252 is about 882.4391061890.

The spelling of 687154252 in words is "six hundred eighty-seven million, one hundred fifty-four thousand, two hundred fifty-two".