226261765 has 8 divisors (see below), whose sum is σ = 273015288. Its totient is φ = 180008640.

The previous prime is 226261757. The next prime is 226261769. The reversal of 226261765 is 567162622.

It is a Cunningham number, because it is equal to 15042²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 2490084 + 223771681 = 1578^2 + 14959^2 .

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

It is not a de Polignac number, because 226261765 - 2³ = 226261757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226261769) 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, 124102 + ... + 125911.

It is an arithmetic number, because the mean of its divisors is an integer number (34126911).

Almost surely, 2^226261765 is an apocalyptic number.

It is an amenable number.

226261765 is a deficient number, since it is larger than the sum of its proper divisors (46753523).

226261765 is a wasteful number, since it uses less digits than its factorization.

226261765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250199.

The product of its digits is 60480, while the sum is 37.

The square root of 226261765 is about 15042.0000332403. Note that the first 4 decimals coincide. The cubic root of 226261765 is about 609.3550156585.

The spelling of 226261765 in words is "two hundred twenty-six million, two hundred sixty-one thousand, seven hundred sixty-five".