3870007656 has 32 divisors (see below), whose sum is σ = 9686997600. Its totient is φ = 1288405440.

The previous prime is 3870007649. The next prime is 3870007657. The reversal of 3870007656 is 6567000783.

3870007656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3870007656² = 29953918514997228672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3870007657) 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, 79951 + ... + 118878.

It is an arithmetic number, because the mean of its divisors is an integer number (302718675).

Almost surely, 2^3870007656 is an apocalyptic number.

It is an amenable number.

3870007656 is an abundant number, since it is smaller than the sum of its proper divisors (5816989944).

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

3870007656 is a wasteful number, since it uses less digits than its factorization.

3870007656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199649 (or 199645 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 3870007656 is about 62209.3855941368. The cubic root of 3870007656 is about 1570.0155050060.

The spelling of 3870007656 in words is "three billion, eight hundred seventy million, seven thousand, six hundred fifty-six".