64947253 has 8 divisors (see below), whose sum is σ = 74360000. Its totient is φ = 55568160.

The previous prime is 64947229. The next prime is 64947257. The reversal of 64947253 is 35274946.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 64947253 - 2⁹ = 64946741 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 (64947257) 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, 4128 + ... + 12121.

It is an arithmetic number, because the mean of its divisors is an integer number (9295000).

Almost surely, 2^64947253 is an apocalyptic number.

It is an amenable number.

64947253 is a deficient number, since it is larger than the sum of its proper divisors (9412747).

64947253 is a wasteful number, since it uses less digits than its factorization.

64947253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16827.

The product of its digits is 181440, while the sum is 40.

The square root of 64947253 is about 8058.9858543119. The cubic root of 64947253 is about 401.9637868256.

The spelling of 64947253 in words is "sixty-four million, nine hundred forty-seven thousand, two hundred fifty-three".