1687465868 has 12 divisors (see below), whose sum is σ = 3221525832. Its totient is φ = 767029920.

The previous prime is 1687465861. The next prime is 1687465907. The reversal of 1687465868 is 8685647861.

It is a happy number.

It is a super-3 number, since 3×1687465868³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1687465861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19175705 + ... + 19175792.

It is an arithmetic number, because the mean of its divisors is an integer number (268460486).

Almost surely, 2^1687465868 is an apocalyptic number.

It is an amenable number.

1687465868 is a deficient number, since it is larger than the sum of its proper divisors (1534059964).

1687465868 is a wasteful number, since it uses less digits than its factorization.

1687465868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38351512 (or 38351510 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 59.

The square root of 1687465868 is about 41078.7763693127. The cubic root of 1687465868 is about 1190.5427620816.

The spelling of 1687465868 in words is "one billion, six hundred eighty-seven million, four hundred sixty-five thousand, eight hundred sixty-eight".