2642320669 has 2 divisors, whose sum is σ = 2642320670. Its totient is φ = 2642320668.

The previous prime is 2642320613. The next prime is 2642320673. The reversal of 2642320669 is 9660232462.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1629171769 + 1013148900 = 40363^2 + 31830^2 .

It is a cyclic number.

It is not a de Polignac number, because 2642320669 - 2⁹ = 2642320157 is a prime.

It is a super-2 number, since 2×2642320669² = 13963717035649215122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2642326669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321160334 + 1321160335.

It is an arithmetic number, because the mean of its divisors is an integer number (1321160335).

Almost surely, 2^2642320669 is an apocalyptic number.

It is an amenable number.

2642320669 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642320669 is an equidigital number, since it uses as much as digits as its factorization.

2642320669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 40.

The square root of 2642320669 is about 51403.5083335758. The cubic root of 2642320669 is about 1382.4894972208.

The spelling of 2642320669 in words is "two billion, six hundred forty-two million, three hundred twenty thousand, six hundred sixty-nine".