1207664669 has 2 divisors, whose sum is σ = 1207664670. Its totient is φ = 1207664668.

The previous prime is 1207664651. The next prime is 1207664677. The reversal of 1207664669 is 9664667021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1007300644 + 200364025 = 31738^2 + 14155^2 .

It is an emirp because it is prime and its reverse (9664667021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1207664669 is a prime.

It is a super-2 number, since 2×1207664669² = 2916907905501759122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1207663669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 603832334 + 603832335.

It is an arithmetic number, because the mean of its divisors is an integer number (603832335).

Almost surely, 2^1207664669 is an apocalyptic number.

It is an amenable number.

1207664669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1207664669 is an equidigital number, since it uses as much as digits as its factorization.

1207664669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 1207664669 is about 34751.4700264608. The cubic root of 1207664669 is about 1064.9162487131.

The spelling of 1207664669 in words is "one billion, two hundred seven million, six hundred sixty-four thousand, six hundred sixty-nine".