3077000721 has 12 divisors (see below), whose sum is σ = 4467120372. Its totient is φ = 2040919776.

The previous prime is 3077000687. The next prime is 3077000741. The reversal of 3077000721 is 1270007703.

It can be written as a sum of positive squares in 2 ways, for example, as 1605204225 + 1471796496 = 40065^2 + 38364^2 .

It is not a de Polignac number, because 3077000721 - 2⁷ = 3077000593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3077000741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 865966 + ... + 869511.

It is an arithmetic number, because the mean of its divisors is an integer number (372260031).

Almost surely, 2^3077000721 is an apocalyptic number.

It is an amenable number.

3077000721 is a deficient number, since it is larger than the sum of its proper divisors (1390119651).

3077000721 is a wasteful number, since it uses less digits than its factorization.

3077000721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735680 (or 1735677 counting only the distinct ones).

The product of its (nonzero) digits is 2058, while the sum is 27.

The square root of 3077000721 is about 55470.7194923592. The cubic root of 3077000721 is about 1454.4848411829.

The spelling of 3077000721 in words is "three billion, seventy-seven million, seven hundred twenty-one", and thus it is an aban number.