3980068640 has 24 divisors (see below), whose sum is σ = 9402912540. Its totient is φ = 1592027392.

The previous prime is 3980068627. The next prime is 3980068657. The reversal of 3980068640 is 468600893.

It can be written as a sum of positive squares in 2 ways, for example, as 3778315024 + 201753616 = 61468^2 + 14204^2 .

It is a super-2 number, since 2×3980068640² = 31681892758222899200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3980068591 and 3980068600.

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, 12437555 + ... + 12437874.

Almost surely, 2^3980068640 is an apocalyptic number.

It is an amenable number.

3980068640 is an abundant number, since it is smaller than the sum of its proper divisors (5422843900).

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

3980068640 is a wasteful number, since it uses less digits than its factorization.

3980068640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24875444 (or 24875436 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 3980068640 is about 63087.7851885767. The cubic root of 3980068640 is about 1584.7600720862.

The spelling of 3980068640 in words is "three billion, nine hundred eighty million, sixty-eight thousand, six hundred forty".