338748665 has 4 divisors (see below), whose sum is σ = 406498404. Its totient is φ = 270998928.

The previous prime is 338748661. The next prime is 338748667. The reversal of 338748665 is 566847833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 566847833 = 29 ⋅19546477.

It can be written as a sum of positive squares in 2 ways, for example, as 239228089 + 99520576 = 15467^2 + 9976^2 .

It is a cyclic number.

It is not a de Polignac number, because 338748665 - 2² = 338748661 is a prime.

It is a super-2 number, since 2×338748665² = 229501316078564450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338748661) 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, 33874862 + ... + 33874871.

It is an arithmetic number, because the mean of its divisors is an integer number (101624601).

Almost surely, 2^338748665 is an apocalyptic number.

It is an amenable number.

338748665 is a deficient number, since it is larger than the sum of its proper divisors (67749739).

338748665 is an equidigital number, since it uses as much as digits as its factorization.

338748665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67749738.

The product of its digits is 2903040, while the sum is 50.

The square root of 338748665 is about 18405.1260522714. The cubic root of 338748665 is about 697.0959037860.

The spelling of 338748665 in words is "three hundred thirty-eight million, seven hundred forty-eight thousand, six hundred sixty-five".