264534691 has 2 divisors, whose sum is σ = 264534692. Its totient is φ = 264534690.

The previous prime is 264534649. The next prime is 264534703. The reversal of 264534691 is 196435462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264534691 - 2¹³ = 264526499 is a prime.

It is not a weakly prime, because it can be changed into another prime (264534601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132267345 + 132267346.

It is an arithmetic number, because the mean of its divisors is an integer number (132267346).

Almost surely, 2^264534691 is an apocalyptic number.

264534691 is a deficient number, since it is larger than the sum of its proper divisors (1).

264534691 is an equidigital number, since it uses as much as digits as its factorization.

264534691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 40.

The square root of 264534691 is about 16264.5224645546. The cubic root of 264534691 is about 641.9396647847.

It can be divided in two parts, 264534 and 691, that added together give a square (265225 = 515²).

The spelling of 264534691 in words is "two hundred sixty-four million, five hundred thirty-four thousand, six hundred ninety-one".