3687720370 has 16 divisors (see below), whose sum is σ = 6652429848. Its totient is φ = 1471858560.

The previous prime is 3687720343. The next prime is 3687720371. The reversal of 3687720370 is 730277863.

It can be written as a sum of positive squares in 4 ways, for example, as 3682183761 + 5536609 = 60681^2 + 2353^2 .

It is not an unprimeable number, because it can be changed into a prime (3687720371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398901 + ... + 408040.

Almost surely, 2^3687720370 is an apocalyptic number.

3687720370 is a deficient number, since it is larger than the sum of its proper divisors (2964709478).

3687720370 is a wasteful number, since it uses less digits than its factorization.

3687720370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807405.

The product of its (nonzero) digits is 296352, while the sum is 43.

The square root of 3687720370 is about 60726.6034782121. The cubic root of 3687720370 is about 1544.9674266897.

The spelling of 3687720370 in words is "three billion, six hundred eighty-seven million, seven hundred twenty thousand, three hundred seventy".