3235678643 has 4 divisors (see below), whose sum is σ = 3253755240. Its totient is φ = 3217602048.

The previous prime is 3235678619. The next prime is 3235678759. The reversal of 3235678643 is 3468765323.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3235678643 - 2¹⁶ = 3235613107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3235678613) 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, 9038030 + ... + 9038387.

It is an arithmetic number, because the mean of its divisors is an integer number (813438810).

Almost surely, 2^3235678643 is an apocalyptic number.

3235678643 is a deficient number, since it is larger than the sum of its proper divisors (18076597).

3235678643 is a wasteful number, since it uses less digits than its factorization.

3235678643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18076596.

The product of its digits is 2177280, while the sum is 47.

The square root of 3235678643 is about 56883.0259655725. The cubic root of 3235678643 is about 1479.0690887694.

The spelling of 3235678643 in words is "three billion, two hundred thirty-five million, six hundred seventy-eight thousand, six hundred forty-three".