264447963 has 32 divisors (see below), whose sum is σ = 423897600. Its totient is φ = 161971488.

The previous prime is 264447943. The next prime is 264447983. The reversal of 264447963 is 369744462.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (264447943) and next prime (264447983).

It is not a de Polignac number, because 264447963 - 2⁸ = 264447707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (264447943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78018 + ... + 81336.

It is an arithmetic number, because the mean of its divisors is an integer number (13246800).

Almost surely, 2^264447963 is an apocalyptic number.

264447963 is a deficient number, since it is larger than the sum of its proper divisors (159449637).

264447963 is a wasteful number, since it uses less digits than its factorization.

264447963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3568 (or 3562 counting only the distinct ones).

The product of its digits is 870912, while the sum is 45.

The square root of 264447963 is about 16261.8560748766. The cubic root of 264447963 is about 641.8695035663.

The spelling of 264447963 in words is "two hundred sixty-four million, four hundred forty-seven thousand, nine hundred sixty-three".