3256643 has 8 divisors (see below), whose sum is σ = 3620736. Its totient is φ = 2908800.

The previous prime is 3256637. The next prime is 3256681. The reversal of 3256643 is 3466523.

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

It is a cyclic number.

It is not a de Polignac number, because 3256643 - 2⁶ = 3256579 is a prime.

It is a super-3 number, since 3×3256643³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3256943) 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, 3638 + ... + 4443.

It is an arithmetic number, because the mean of its divisors is an integer number (452592).

Almost surely, 2^3256643 is an apocalyptic number.

3256643 is a deficient number, since it is larger than the sum of its proper divisors (364093).

3256643 is a wasteful number, since it uses less digits than its factorization.

3256643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8125.

The product of its digits is 12960, while the sum is 29.

The square root of 3256643 is about 1804.6171339096. The cubic root of 3256643 is about 148.2256571026.

The spelling of 3256643 in words is "three million, two hundred fifty-six thousand, six hundred forty-three".