64023253 has 6 divisors (see below), whose sum is σ = 74476086. Its totient is φ = 54877032.

The previous prime is 64023247. The next prime is 64023299. The reversal of 64023253 is 35232046.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 42289009 + 21734244 = 6503^2 + 4662^2 .

It is not a de Polignac number, because 64023253 - 2⁹ = 64022741 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 (64023203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 653250 + ... + 653347.

It is an arithmetic number, because the mean of its divisors is an integer number (12412681).

Almost surely, 2^64023253 is an apocalyptic number.

It is an amenable number.

64023253 is a deficient number, since it is larger than the sum of its proper divisors (10452833).

64023253 is a wasteful number, since it uses less digits than its factorization.

64023253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306611 (or 1306604 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 64023253 is about 8001.4531805166. The cubic root of 64023253 is about 400.0484378842.

Adding to 64023253 its reverse (35232046), we get a palindrome (99255299).

The spelling of 64023253 in words is "sixty-four million, twenty-three thousand, two hundred fifty-three".