64623343 has 4 divisors (see below), whose sum is σ = 65441440. Its totient is φ = 63805248.

The previous prime is 64623337. The next prime is 64623347. The reversal of 64623343 is 34332646.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34332646 = 2 ⋅17166323.

It is a cyclic number.

It is not a de Polignac number, because 64623343 - 2¹³ = 64615151 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 (64623347) 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, 408930 + ... + 409087.

It is an arithmetic number, because the mean of its divisors is an integer number (16360360).

Almost surely, 2^64623343 is an apocalyptic number.

64623343 is a deficient number, since it is larger than the sum of its proper divisors (818097).

64623343 is an equidigital number, since it uses as much as digits as its factorization.

64623343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818096.

The product of its digits is 31104, while the sum is 31.

The square root of 64623343 is about 8038.8645342486. The cubic root of 64623343 is about 401.2944378083.

Adding to 64623343 its reverse (34332646), we get a palindrome (98955989).

The spelling of 64623343 in words is "sixty-four million, six hundred twenty-three thousand, three hundred forty-three".