64346791 has 4 divisors (see below), whose sum is σ = 65843272. Its totient is φ = 62850312.

The previous prime is 64346783. The next prime is 64346813. The reversal of 64346791 is 19764346.

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 64346791 - 2³ = 64346783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64346291) 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 3 ways as a sum of consecutive naturals, for example, 748176 + ... + 748261.

It is an arithmetic number, because the mean of its divisors is an integer number (16460818).

Almost surely, 2^64346791 is an apocalyptic number.

64346791 is a deficient number, since it is larger than the sum of its proper divisors (1496481).

64346791 is a wasteful number, since it uses less digits than its factorization.

64346791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496480.

The product of its digits is 108864, while the sum is 40.

The square root of 64346791 is about 8021.6451554528. The cubic root of 64346791 is about 400.7211802163.

It can be divided in two parts, 6434 and 6791, that added together give a square (13225 = 115²).

The spelling of 64346791 in words is "sixty-four million, three hundred forty-six thousand, seven hundred ninety-one".