264540847 has 2 divisors, whose sum is σ = 264540848. Its totient is φ = 264540846.

The previous prime is 264540839. The next prime is 264540851. The reversal of 264540847 is 748045462.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264540847 - 2³ = 264540839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264541847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132270423 + 132270424.

It is an arithmetic number, because the mean of its divisors is an integer number (132270424).

Almost surely, 2^264540847 is an apocalyptic number.

264540847 is a deficient number, since it is larger than the sum of its proper divisors (1).

264540847 is an equidigital number, since it uses as much as digits as its factorization.

264540847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 215040, while the sum is 40.

The square root of 264540847 is about 16264.7117097107. The cubic root of 264540847 is about 641.9446442827.

The spelling of 264540847 in words is "two hundred sixty-four million, five hundred forty thousand, eight hundred forty-seven".