606549688969 has 81 divisors (see below), whose sum is σ = 757114729749. Its totient is φ = 484483991040.

The previous prime is 606549688967. The next prime is 606549688991. The reversal of 606549688969 is 969886945606.

It is a happy number.

The square root of 606549688969 is 778813.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 93750478969 + 512799210000 = 306187^2 + 716100^2 .

It is not a de Polignac number, because 606549688969 - 2¹ = 606549688967 is a prime.

It is a super-2 number, since 2×606549688969² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 606549688895 and 606549688904.

It is not an unprimeable number, because it can be changed into a prime (606549688967) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 6253089529 + ... + 6253089625.

It is an arithmetic number, because the mean of its divisors is an integer number (9347095429).

Almost surely, 2^606549688969 is an apocalyptic number.

606549688969 is the 778813-rd square number.

606549688969 is the 389407-th centered octagonal number.

It is an amenable number.

606549688969 is a deficient number, since it is larger than the sum of its proper divisors (150565040780).

606549688969 is an frugal number, since it uses more digits than its factorization.

606549688969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 1209323520, while the sum is 76.

The spelling of 606549688969 in words is "six hundred six billion, five hundred forty-nine million, six hundred eighty-eight thousand, nine hundred sixty-nine".