264428817 has 4 divisors (see below), whose sum is σ = 352571760. Its totient is φ = 176285876.

The previous prime is 264428809. The next prime is 264428831. The reversal of 264428817 is 718824462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 264428817 - 2³ = 264428809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (264428117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44071467 + ... + 44071472.

It is an arithmetic number, because the mean of its divisors is an integer number (88142940).

Almost surely, 2^264428817 is an apocalyptic number.

It is an amenable number.

264428817 is a deficient number, since it is larger than the sum of its proper divisors (88142943).

264428817 is an equidigital number, since it uses as much as digits as its factorization.

264428817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88142942.

The product of its digits is 172032, while the sum is 42.

The square root of 264428817 is about 16261.2673860311. The cubic root of 264428817 is about 641.8540127681.

The spelling of 264428817 in words is "two hundred sixty-four million, four hundred twenty-eight thousand, eight hundred seventeen".