1297789606 has 16 divisors (see below), whose sum is σ = 1980878400. Its totient is φ = 637510248.

The previous prime is 1297789601. The next prime is 1297789637. The reversal of 1297789606 is 6069877921.

It is a super-2 number, since 2×1297789606² = 3368515722883270472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297789601) 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, 354421 + ... + 358063.

It is an arithmetic number, because the mean of its divisors is an integer number (123804900).

Almost surely, 2^1297789606 is an apocalyptic number.

1297789606 is a deficient number, since it is larger than the sum of its proper divisors (683088794).

1297789606 is a wasteful number, since it uses less digits than its factorization.

1297789606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6723.

The product of its (nonzero) digits is 2286144, while the sum is 55.

The square root of 1297789606 is about 36024.8470642139. The cubic root of 1297789606 is about 1090.7739659205.

The spelling of 1297789606 in words is "one billion, two hundred ninety-seven million, seven hundred eighty-nine thousand, six hundred six".