3640240641 has 8 divisors (see below), whose sum is σ = 4854687264. Its totient is φ = 2426310560.

The previous prime is 3640240577. The next prime is 3640240649. The reversal of 3640240641 is 1460420463.

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 3640240641 - 2⁶ = 3640240577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3640240599 and 3640240608.

It is not an unprimeable number, because it can be changed into a prime (3640240649) 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, 112380 + ... + 141101.

It is an arithmetic number, because the mean of its divisors is an integer number (606835908).

Almost surely, 2^3640240641 is an apocalyptic number.

It is an amenable number.

3640240641 is a deficient number, since it is larger than the sum of its proper divisors (1214446623).

3640240641 is a wasteful number, since it uses less digits than its factorization.

3640240641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258271.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 3640240641 is about 60334.4067759019. The cubic root of 3640240641 is about 1538.3082339726.

The spelling of 3640240641 in words is "three billion, six hundred forty million, two hundred forty thousand, six hundred forty-one".