64434253 has 16 divisors (see below), whose sum is σ = 72022720. Its totient is φ = 57262464.

The previous prime is 64434241. The next prime is 64434257. The reversal of 64434253 is 35243446.

It is a cyclic number.

It is not a de Polignac number, because 64434253 - 2¹⁷ = 64303181 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 (64434257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40018 + ... + 41596.

It is an arithmetic number, because the mean of its divisors is an integer number (4501420).

Almost surely, 2^64434253 is an apocalyptic number.

It is an amenable number.

64434253 is a deficient number, since it is larger than the sum of its proper divisors (7588467).

64434253 is a wasteful number, since it uses less digits than its factorization.

64434253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708.

The product of its digits is 34560, while the sum is 31.

The square root of 64434253 is about 8027.0949290512. The cubic root of 64434253 is about 400.9026552515.

Adding to 64434253 its reverse (35243446), we get a palindrome (99677699).

The spelling of 64434253 in words is "sixty-four million, four hundred thirty-four thousand, two hundred fifty-three".