3720669685 has 8 divisors (see below), whose sum is σ = 4537997496. Its totient is φ = 2927739840.

The previous prime is 3720669671. The next prime is 3720669709. The reversal of 3720669685 is 5869660273.

It can be written as a sum of positive squares in 4 ways, for example, as 301577956 + 3419091729 = 17366^2 + 58473^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-3720669685 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6099154 + ... + 6099763.

It is an arithmetic number, because the mean of its divisors is an integer number (567249687).

Almost surely, 2^3720669685 is an apocalyptic number.

It is an amenable number.

3720669685 is a deficient number, since it is larger than the sum of its proper divisors (817327811).

3720669685 is a wasteful number, since it uses less digits than its factorization.

3720669685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12198983.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The square root of 3720669685 is about 60997.2924399108. The cubic root of 3720669685 is about 1549.5551529524. Note that the first 3 decimals are identical.

The spelling of 3720669685 in words is "three billion, seven hundred twenty million, six hundred sixty-nine thousand, six hundred eighty-five".