264615979 has 2 divisors, whose sum is σ = 264615980. Its totient is φ = 264615978.

The previous prime is 264615977. The next prime is 264616007. The reversal of 264615979 is 979516462.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 264615979 - 2¹ = 264615977 is a prime.

Together with 264615977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (264615973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132307989 + 132307990.

It is an arithmetic number, because the mean of its divisors is an integer number (132307990).

Almost surely, 2^264615979 is an apocalyptic number.

264615979 is a deficient number, since it is larger than the sum of its proper divisors (1).

264615979 is an equidigital number, since it uses as much as digits as its factorization.

264615979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 49.

The square root of 264615979 is about 16267.0212085680. The cubic root of 264615979 is about 642.0054112308.

The spelling of 264615979 in words is "two hundred sixty-four million, six hundred fifteen thousand, nine hundred seventy-nine".