64345791 has 8 divisors (see below), whose sum is σ = 85854384. Its totient is φ = 42867200.

The previous prime is 64345783. The next prime is 64345807. The reversal of 64345791 is 19754346.

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 64345791 - 2³ = 64345783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64345291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1896 + ... + 11501.

It is an arithmetic number, because the mean of its divisors is an integer number (10731798).

Almost surely, 2^64345791 is an apocalyptic number.

64345791 is a deficient number, since it is larger than the sum of its proper divisors (21508593).

64345791 is a wasteful number, since it uses less digits than its factorization.

64345791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15001.

The product of its digits is 90720, while the sum is 39.

The square root of 64345791 is about 8021.5828238571. The cubic root of 64345791 is about 400.7191043642.

The spelling of 64345791 in words is "sixty-four million, three hundred forty-five thousand, seven hundred ninety-one".