64545433 has 2 divisors, whose sum is σ = 64545434. Its totient is φ = 64545432.

The previous prime is 64545409. The next prime is 64545443. The reversal of 64545433 is 33454546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54125449 + 10419984 = 7357^2 + 3228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64545433 is a prime.

It is a super-2 number, since 2×64545433² = 8332225842314978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64545443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32272716 + 32272717.

It is an arithmetic number, because the mean of its divisors is an integer number (32272717).

Almost surely, 2^64545433 is an apocalyptic number.

It is an amenable number.

64545433 is a deficient number, since it is larger than the sum of its proper divisors (1).

64545433 is an equidigital number, since it uses as much as digits as its factorization.

64545433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 34.

The square root of 64545433 is about 8034.0172392148. The cubic root of 64545433 is about 401.1331058967.

Adding to 64545433 its reverse (33454546), we get a palindrome (97999979).

It can be divided in two parts, 6454543 and 3, that added together give a palindrome (6454546).

The spelling of 64545433 in words is "sixty-four million, five hundred forty-five thousand, four hundred thirty-three".