336668781 has 8 divisors (see below), whose sum is σ = 449641024. Its totient is φ = 224071200.

The previous prime is 336668767. The next prime is 336668789. The reversal of 336668781 is 187866633.

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

It is not a de Polignac number, because 336668781 - 2¹⁴ = 336652397 is a prime.

It is a super-2 number, since 2×336668781² = 226691736200051922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 336668781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (336668789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91561 + ... + 95166.

It is an arithmetic number, because the mean of its divisors is an integer number (56205128).

Almost surely, 2^336668781 is an apocalyptic number.

It is an amenable number.

336668781 is a deficient number, since it is larger than the sum of its proper divisors (112972243).

336668781 is a wasteful number, since it uses less digits than its factorization.

336668781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187331.

The product of its digits is 870912, while the sum is 48.

The square root of 336668781 is about 18348.5362086462. The cubic root of 336668781 is about 695.6662734024. Note that the first 3 decimals are identical.

The spelling of 336668781 in words is "three hundred thirty-six million, six hundred sixty-eight thousand, seven hundred eighty-one".