3399681 has 4 divisors (see below), whose sum is σ = 4532912. Its totient is φ = 2266452.

The previous prime is 3399673. The next prime is 3399707. The reversal of 3399681 is 1869933.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3399681 - 2³ = 3399673 is a prime.

It is a super-2 number, since 2×3399681² = 23115661803522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

3399681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3399631) 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, 566611 + ... + 566616.

It is an arithmetic number, because the mean of its divisors is an integer number (1133228).

It is a Proth number, since it is equal to 415 ⋅ 2¹³ + 1 and 415 < 2¹³.

Almost surely, 2^3399681 is an apocalyptic number.

It is an amenable number.

3399681 is a deficient number, since it is larger than the sum of its proper divisors (1133231).

3399681 is a wasteful number, since it uses less digits than its factorization.

3399681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133230.

The product of its digits is 34992, while the sum is 39.

The square root of 3399681 is about 1843.8223884095. The cubic root of 3399681 is about 150.3647567423.

The spelling of 3399681 in words is "three million, three hundred ninety-nine thousand, six hundred eighty-one".