1687490612 has 24 divisors (see below), whose sum is σ = 2987240256. Its totient is φ = 834023808.

The previous prime is 1687490591. The next prime is 1687490621. The reversal of 1687490612 is 2160947861.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240863 + ... + 247769.

It is an arithmetic number, because the mean of its divisors is an integer number (124468344).

Almost surely, 2^1687490612 is an apocalyptic number.

It is an amenable number.

1687490612 is a deficient number, since it is larger than the sum of its proper divisors (1299749644).

1687490612 is a wasteful number, since it uses less digits than its factorization.

1687490612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7607 (or 7605 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 1687490612 is about 41079.0775456314. The cubic root of 1687490612 is about 1190.5485811912.

The spelling of 1687490612 in words is "one billion, six hundred eighty-seven million, four hundred ninety thousand, six hundred twelve".