64433243 has 16 divisors (see below), whose sum is σ = 76079040. Its totient is φ = 53415936.

The previous prime is 64433233. The next prime is 64433249. The reversal of 64433243 is 34233446.

It is a de Polignac number, because none of the positive numbers 2^k-64433243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64433249) 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, 49343 + ... + 50631.

It is an arithmetic number, because the mean of its divisors is an integer number (4754940).

Almost surely, 2^64433243 is an apocalyptic number.

64433243 is a deficient number, since it is larger than the sum of its proper divisors (11645797).

64433243 is a wasteful number, since it uses less digits than its factorization.

64433243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526.

The product of its digits is 20736, while the sum is 29.

The square root of 64433243 is about 8027.0320168790. The cubic root of 64433243 is about 400.9005605385.

Adding to 64433243 its reverse (34233446), we get a palindrome (98666689).

The spelling of 64433243 in words is "sixty-four million, four hundred thirty-three thousand, two hundred forty-three".