2665212679 has 2 divisors, whose sum is σ = 2665212680. Its totient is φ = 2665212678.

The previous prime is 2665212661. The next prime is 2665212701. The reversal of 2665212679 is 9762125662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2665212679 - 2²¹ = 2663115527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2665212629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332606339 + 1332606340.

It is an arithmetic number, because the mean of its divisors is an integer number (1332606340).

Almost surely, 2^2665212679 is an apocalyptic number.

2665212679 is a deficient number, since it is larger than the sum of its proper divisors (1).

2665212679 is an equidigital number, since it uses as much as digits as its factorization.

2665212679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 46.

The square root of 2665212679 is about 51625.6978548474. The cubic root of 2665212679 is about 1386.4704681951.

The spelling of 2665212679 in words is "two billion, six hundred sixty-five million, two hundred twelve thousand, six hundred seventy-nine".