264666838 has 4 divisors (see below), whose sum is σ = 397000260. Its totient is φ = 132333418.

The previous prime is 264666833. The next prime is 264666859. The reversal of 264666838 is 838666462.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 264666791 and 264666800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264666833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66166708 + ... + 66166711.

It is an arithmetic number, because the mean of its divisors is an integer number (99250065).

Almost surely, 2^264666838 is an apocalyptic number.

264666838 is a deficient number, since it is larger than the sum of its proper divisors (132333422).

264666838 is a wasteful number, since it uses less digits than its factorization.

264666838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132333421.

The product of its digits is 1990656, while the sum is 49.

The square root of 264666838 is about 16268.5843883234. The cubic root of 264666838 is about 642.0465395881.

The spelling of 264666838 in words is "two hundred sixty-four million, six hundred sixty-six thousand, eight hundred thirty-eight".