336680991 has 6 divisors (see below), whose sum is σ = 486317000. Its totient is φ = 224453988.

The previous prime is 336680989. The next prime is 336680999. The reversal of 336680991 is 199086633.

It is not a de Polignac number, because 336680991 - 2¹ = 336680989 is a prime.

It is a super-2 number, since 2×336680991² = 226708179401484162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (336680999) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18704491 + ... + 18704508.

Almost surely, 2^336680991 is an apocalyptic number.

336680991 is a deficient number, since it is larger than the sum of its proper divisors (149636009).

336680991 is a wasteful number, since it uses less digits than its factorization.

336680991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37409005 (or 37409002 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 336680991 is about 18348.8689297188. The cubic root of 336680991 is about 695.6746832332.

The spelling of 336680991 in words is "three hundred thirty-six million, six hundred eighty thousand, nine hundred ninety-one".