264796921 has 2 divisors, whose sum is σ = 264796922. Its totient is φ = 264796920.

The previous prime is 264796891. The next prime is 264796927. The reversal of 264796921 is 129697462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232135696 + 32661225 = 15236^2 + 5715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264796921 is a prime.

It is not a weakly prime, because it can be changed into another prime (264796927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132398460 + 132398461.

It is an arithmetic number, because the mean of its divisors is an integer number (132398461).

Almost surely, 2^264796921 is an apocalyptic number.

It is an amenable number.

264796921 is a deficient number, since it is larger than the sum of its proper divisors (1).

264796921 is an equidigital number, since it uses as much as digits as its factorization.

264796921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 46.

The square root of 264796921 is about 16272.5818787309. The cubic root of 264796921 is about 642.1517103771.

The spelling of 264796921 in words is "two hundred sixty-four million, seven hundred ninety-six thousand, nine hundred twenty-one".