336669640 has 64 divisors (see below), whose sum is σ = 773323200. Its totient is φ = 131881728.

The previous prime is 336669631. The next prime is 336669647. The reversal of 336669640 is 46966633.

It is a super-2 number, since 2×336669640² = 226692892995459200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (336669647) 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 15 ways as a sum of consecutive naturals, for example, 720687 + ... + 721153.

It is an arithmetic number, because the mean of its divisors is an integer number (12083175).

Almost surely, 2^336669640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 336669640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386661600).

336669640 is an abundant number, since it is smaller than the sum of its proper divisors (436653560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

336669640 is a wasteful number, since it uses less digits than its factorization.

336669640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 43.

The square root of 336669640 is about 18348.5596164931. The cubic root of 336669640 is about 695.6668650589. Note that the first 3 decimals are identical.

The spelling of 336669640 in words is "three hundred thirty-six million, six hundred sixty-nine thousand, six hundred forty".