265672218 has 96 divisors (see below), whose sum is σ = 653028480. Its totient is φ = 71702400.

The previous prime is 265672213. The next prime is 265672237. The reversal of 265672218 is 812276562.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (265672213) 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 in 47 ways as a sum of consecutive naturals, for example, 682768 + ... + 683156.

It is an arithmetic number, because the mean of its divisors is an integer number (6802380).

Almost surely, 2^265672218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265672218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326514240).

265672218 is an abundant number, since it is smaller than the sum of its proper divisors (387356262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265672218 is a wasteful number, since it uses less digits than its factorization.

265672218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532 (or 525 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 265672218 is about 16299.4545307504. The cubic root of 265672218 is about 642.8584850625.

The spelling of 265672218 in words is "two hundred sixty-five million, six hundred seventy-two thousand, two hundred eighteen".