3691686870 has 24 divisors (see below), whose sum is σ = 9598386096. Its totient is φ = 984449808.

The previous prime is 3691686851. The next prime is 3691686893. The reversal of 3691686870 is 786861963.

It is a happy number.

It is a super-2 number, since 2×3691686870² = 27257103892260793800, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 20509282 + ... + 20509461.

It is an arithmetic number, because the mean of its divisors is an integer number (399932754).

Almost surely, 2^3691686870 is an apocalyptic number.

3691686870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3691686870 is an abundant number, since it is smaller than the sum of its proper divisors (5906699226).

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

3691686870 is a wasteful number, since it uses less digits than its factorization.

3691686870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41018756 (or 41018753 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 3691686870 is about 60759.2533693428. The cubic root of 3691686870 is about 1545.5211488513.

It can be divided in two parts, 3691 and 686870, that added together give a square (690561 = 831²).

The spelling of 3691686870 in words is "three billion, six hundred ninety-one million, six hundred eighty-six thousand, eight hundred seventy".