338897661 has 8 divisors (see below), whose sum is σ = 475645920. Its totient is φ = 214040592.

The previous prime is 338897653. The next prime is 338897681. The reversal of 338897661 is 166798833.

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

It is not a de Polignac number, because 338897661 - 2³ = 338897653 is a prime.

It is a super-2 number, since 2×338897661² = 229703249262541842, which contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338897621) 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, 2972730 + ... + 2972843.

It is an arithmetic number, because the mean of its divisors is an integer number (59455740).

Almost surely, 2^338897661 is an apocalyptic number.

It is an amenable number.

338897661 is a deficient number, since it is larger than the sum of its proper divisors (136748259).

338897661 is a wasteful number, since it uses less digits than its factorization.

338897661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5945595.

The product of its digits is 1306368, while the sum is 51.

The square root of 338897661 is about 18409.1732839908. The cubic root of 338897661 is about 697.1980928991.

The spelling of 338897661 in words is "three hundred thirty-eight million, eight hundred ninety-seven thousand, six hundred sixty-one".