64543412 has 12 divisors (see below), whose sum is σ = 114116100. Its totient is φ = 31938816.

The previous prime is 64543397. The next prime is 64543433. The reversal of 64543412 is 21434546.

It can be written as a sum of positive squares in 2 ways, for example, as 26152996 + 38390416 = 5114^2 + 6196^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82787 + ... + 83562.

It is an arithmetic number, because the mean of its divisors is an integer number (9509675).

Almost surely, 2^64543412 is an apocalyptic number.

It is an amenable number.

64543412 is a deficient number, since it is larger than the sum of its proper divisors (49572688).

64543412 is a wasteful number, since it uses less digits than its factorization.

64543412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166450 (or 166448 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 64543412 is about 8033.8914605563. The cubic root of 64543412 is about 401.1289191896.

Adding to 64543412 its reverse (21434546), we get a palindrome (85977958).

The spelling of 64543412 in words is "sixty-four million, five hundred forty-three thousand, four hundred twelve".