64506423 has 8 divisors (see below), whose sum is σ = 87097600. Its totient is φ = 42459768.

The previous prime is 64506413. The next prime is 64506427. The reversal of 64506423 is 32460546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64506423 - 2⁵ = 64506391 is a prime.

It is a super-2 number, since 2×64506423² = 8322157216509858, which 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 (64506427) 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, 135853 + ... + 136326.

It is an arithmetic number, because the mean of its divisors is an integer number (10887200).

Almost surely, 2^64506423 is an apocalyptic number.

64506423 is a deficient number, since it is larger than the sum of its proper divisors (22591177).

64506423 is a wasteful number, since it uses less digits than its factorization.

64506423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272261.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 64506423 is about 8031.5890706634. The cubic root of 64506423 is about 401.0522772706.

Adding to 64506423 its reverse (32460546), we get a palindrome (96966969).

The spelling of 64506423 in words is "sixty-four million, five hundred six thousand, four hundred twenty-three".