64315243 has 16 divisors (see below), whose sum is σ = 68544000. Its totient is φ = 60252192.

The previous prime is 64315231. The next prime is 64315249. The reversal of 64315243 is 34251346.

It is a cyclic number.

It is not a de Polignac number, because 64315243 - 2⁵ = 64315211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64315249) 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, 153288 + ... + 153706.

It is an arithmetic number, because the mean of its divisors is an integer number (4284000).

Almost surely, 2^64315243 is an apocalyptic number.

64315243 is a deficient number, since it is larger than the sum of its proper divisors (4228757).

64315243 is a wasteful number, since it uses less digits than its factorization.

64315243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594.

The product of its digits is 8640, while the sum is 28.

The square root of 64315243 is about 8019.6784848272. The cubic root of 64315243 is about 400.6556808692.

Adding to 64315243 its reverse (34251346), we get a palindrome (98566589).

The spelling of 64315243 in words is "sixty-four million, three hundred fifteen thousand, two hundred forty-three".