6145640689 has 8 divisors (see below), whose sum is σ = 6339552768. Its totient is φ = 5953192560.

The previous prime is 6145640651. The next prime is 6145640717. The reversal of 6145640689 is 9860465416.

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 6145640689 - 2¹³ = 6145632497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6145640489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357457 + ... + 374254.

It is an arithmetic number, because the mean of its divisors is an integer number (792444096).

Almost surely, 2^6145640689 is an apocalyptic number.

It is an amenable number.

6145640689 is a deficient number, since it is larger than the sum of its proper divisors (193912079).

6145640689 is a wasteful number, since it uses less digits than its factorization.

6145640689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731975.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The square root of 6145640689 is about 78394.1368279542. The cubic root of 6145640689 is about 1831.7058048313.

The spelling of 6145640689 in words is "six billion, one hundred forty-five million, six hundred forty thousand, six hundred eighty-nine".