64606105823 has 8 divisors (see below), whose sum is σ = 73842690048. Its totient is φ = 55371306744.

The previous prime is 64606105807. The next prime is 64606105867. The reversal of 64606105823 is 32850160646.

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 64606105823 - 2⁴ = 64606105807 is a prime.

It is a super-2 number, since 2×64606105823² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64606105723) 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, 367811 + ... + 514292.

It is an arithmetic number, because the mean of its divisors is an integer number (9230336256).

Almost surely, 2^64606105823 is an apocalyptic number.

64606105823 is a deficient number, since it is larger than the sum of its proper divisors (9236584225).

64606105823 is a wasteful number, since it uses less digits than its factorization.

64606105823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892573.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 64606105823 in words is "sixty-four billion, six hundred six million, one hundred five thousand, eight hundred twenty-three".