3253681645 has 8 divisors (see below), whose sum is σ = 3995218656. Its totient is φ = 2542411536.

The previous prime is 3253681609. The next prime is 3253681661. The reversal of 3253681645 is 5461863523.

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 3253681645 - 2⁷ = 3253681517 is a prime.

It is a super-3 number, since 3×3253681645³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7566487 + ... + 7566916.

It is an arithmetic number, because the mean of its divisors is an integer number (499402332).

Almost surely, 2^3253681645 is an apocalyptic number.

It is an amenable number.

3253681645 is a deficient number, since it is larger than the sum of its proper divisors (741537011).

3253681645 is a wasteful number, since it uses less digits than its factorization.

3253681645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15133451.

The product of its digits is 518400, while the sum is 43.

The square root of 3253681645 is about 57041.0522781619. The cubic root of 3253681645 is about 1481.8071492266.

The spelling of 3253681645 in words is "three billion, two hundred fifty-three million, six hundred eighty-one thousand, six hundred forty-five".