3865722668 has 12 divisors (see below), whose sum is σ = 6776054880. Its totient is φ = 1929706992.

The previous prime is 3865722613. The next prime is 3865722689. The reversal of 3865722668 is 8662275683.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 785828 + ... + 790731.

It is an arithmetic number, because the mean of its divisors is an integer number (564671240).

Almost surely, 2^3865722668 is an apocalyptic number.

It is an amenable number.

3865722668 is a deficient number, since it is larger than the sum of its proper divisors (2910332212).

3865722668 is a wasteful number, since it uses less digits than its factorization.

3865722668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577176 (or 1577174 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 53.

The square root of 3865722668 is about 62174.9360112256. The cubic root of 3865722668 is about 1569.4358349995.

The spelling of 3865722668 in words is "three billion, eight hundred sixty-five million, seven hundred twenty-two thousand, six hundred sixty-eight".