264521707 has 2 divisors, whose sum is σ = 264521708. Its totient is φ = 264521706.

The previous prime is 264521641. The next prime is 264521711. The reversal of 264521707 is 707125462.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264521707 is a prime.

It is not a weakly prime, because it can be changed into another prime (264521797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132260853 + 132260854.

It is an arithmetic number, because the mean of its divisors is an integer number (132260854).

Almost surely, 2^264521707 is an apocalyptic number.

264521707 is a deficient number, since it is larger than the sum of its proper divisors (1).

264521707 is an equidigital number, since it uses as much as digits as its factorization.

264521707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 264521707 is about 16264.1233086816. The cubic root of 264521707 is about 641.9291619644.

The spelling of 264521707 in words is "two hundred sixty-four million, five hundred twenty-one thousand, seven hundred seven".