606977649 has 6 divisors (see below), whose sum is σ = 876745506. Its totient is φ = 404651760.

The previous prime is 606977641. The next prime is 606977669. The reversal of 606977649 is 946779606.

It can be written as a sum of positive squares in only one way, i.e., 512207424 + 94770225 = 22632^2 + 9735^2 .

It is not a de Polignac number, because 606977649 - 2³ = 606977641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 606977595 and 606977604.

It is not an unprimeable number, because it can be changed into a prime (606977641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33720972 + ... + 33720989.

It is an arithmetic number, because the mean of its divisors is an integer number (146124251).

Almost surely, 2^606977649 is an apocalyptic number.

It is an amenable number.

606977649 is a deficient number, since it is larger than the sum of its proper divisors (269767857).

606977649 is a wasteful number, since it uses less digits than its factorization.

606977649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67441967 (or 67441964 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 54.

The square root of 606977649 is about 24636.9163857817. The cubic root of 606977649 is about 846.6896150978.

The spelling of 606977649 in words is "six hundred six million, nine hundred seventy-seven thousand, six hundred forty-nine".