64334253 has 4 divisors (see below), whose sum is σ = 85779008. Its totient is φ = 42889500.

The previous prime is 64334251. The next prime is 64334261. The reversal of 64334253 is 35243346.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 64334253 - 2¹ = 64334251 is a prime.

It is a super-2 number, since 2×64334253² = 8277792218136018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64334253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64334251) 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, 10722373 + ... + 10722378.

It is an arithmetic number, because the mean of its divisors is an integer number (21444752).

Almost surely, 2^64334253 is an apocalyptic number.

It is an amenable number.

64334253 is a deficient number, since it is larger than the sum of its proper divisors (21444755).

64334253 is a wasteful number, since it uses less digits than its factorization.

64334253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21444754.

The product of its digits is 25920, while the sum is 30.

The square root of 64334253 is about 8020.8636068693. The cubic root of 64334253 is about 400.6951516274.

Adding to 64334253 its reverse (35243346), we get a palindrome (99577599).

The spelling of 64334253 in words is "sixty-four million, three hundred thirty-four thousand, two hundred fifty-three".