687250038 has 32 divisors (see below), whose sum is σ = 1399237632. Its totient is φ = 224985600.

The previous prime is 687250013. The next prime is 687250061. The reversal of 687250038 is 830052786.

It is a super-2 number, since 2×687250038² = 944625229462002888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 687249978 and 687250005.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 112470 + ... + 118422.

It is an arithmetic number, because the mean of its divisors is an integer number (43726176).

Almost surely, 2^687250038 is an apocalyptic number.

687250038 is an abundant number, since it is smaller than the sum of its proper divisors (711987594).

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

687250038 is a wasteful number, since it uses less digits than its factorization.

687250038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6300.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 687250038 is about 26215.4541826000. The cubic root of 687250038 is about 882.4801068739.

The spelling of 687250038 in words is "six hundred eighty-seven million, two hundred fifty thousand, thirty-eight".