687009412 has 6 divisors (see below), whose sum is σ = 1202266478. Its totient is φ = 343504704.

The previous prime is 687009397. The next prime is 687009413. The reversal of 687009412 is 214900786.

687009412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 469328896 + 217680516 = 21664^2 + 14754^2 .

It is not an unprimeable number, because it can be changed into a prime (687009413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85876173 + ... + 85876180.

Almost surely, 2^687009412 is an apocalyptic number.

It is an amenable number.

687009412 is a deficient number, since it is larger than the sum of its proper divisors (515257066).

687009412 is a wasteful number, since it uses less digits than its factorization.

687009412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171752357 (or 171752355 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 687009412 is about 26210.8643886462. The cubic root of 687009412 is about 882.3771009643.

The spelling of 687009412 in words is "six hundred eighty-seven million, nine thousand, four hundred twelve".