264287881 has 8 divisors (see below), whose sum is σ = 310492224. Its totient is φ = 221779920.

The previous prime is 264287867. The next prime is 264287887. The reversal of 264287881 is 188782462.

It is a happy number.

264287881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264287881 is a prime.

It is a super-2 number, since 2×264287881² = 139696168086940322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264287887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 923941 + ... + 924226.

It is an arithmetic number, because the mean of its divisors is an integer number (38811528).

Almost surely, 2^264287881 is an apocalyptic number.

It is an amenable number.

264287881 is a deficient number, since it is larger than the sum of its proper divisors (46204343).

264287881 is a wasteful number, since it uses less digits than its factorization.

264287881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848191.

The product of its digits is 344064, while the sum is 46.

The square root of 264287881 is about 16256.9333208942. The cubic root of 264287881 is about 641.7399601292.

The spelling of 264287881 in words is "two hundred sixty-four million, two hundred eighty-seven thousand, eight hundred eighty-one".