3721686870 has 64 divisors (see below), whose sum is σ = 10080080640. Its totient is φ = 871113600.

The previous prime is 3721686863. The next prime is 3721686889. The reversal of 3721686870 is 786861273.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184876 + ... + 204015.

It is an arithmetic number, because the mean of its divisors is an integer number (157501260).

Almost surely, 2^3721686870 is an apocalyptic number.

3721686870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3721686870 is an abundant number, since it is smaller than the sum of its proper divisors (6358393770).

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

3721686870 is a wasteful number, since it uses less digits than its factorization.

3721686870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388941.

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 3721686870 is about 61005.6298221730. The cubic root of 3721686870 is about 1549.6963498137.

The spelling of 3721686870 in words is "three billion, seven hundred twenty-one million, six hundred eighty-six thousand, eight hundred seventy".