64766423 has 4 divisors (see below), whose sum is σ = 66144480. Its totient is φ = 63388368.

The previous prime is 64766407. The next prime is 64766431. The reversal of 64766423 is 32466746.

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 64766423 - 2⁴ = 64766407 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 (64766453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688958 + ... + 689051.

It is an arithmetic number, because the mean of its divisors is an integer number (16536120).

Almost surely, 2^64766423 is an apocalyptic number.

64766423 is a deficient number, since it is larger than the sum of its proper divisors (1378057).

64766423 is a wasteful number, since it uses less digits than its factorization.

64766423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378056.

The product of its digits is 145152, while the sum is 38.

The square root of 64766423 is about 8047.7588805828. The cubic root of 64766423 is about 401.5903829085.

The spelling of 64766423 in words is "sixty-four million, seven hundred sixty-six thousand, four hundred twenty-three".