64334549 has 2 divisors, whose sum is σ = 64334550. Its totient is φ = 64334548.

The previous prime is 64334509. The next prime is 64334593. The reversal of 64334549 is 94543346.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64288324 + 46225 = 8018^2 + 215^2 .

It is a cyclic number.

It is not a de Polignac number, because 64334549 - 2⁸ = 64334293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64334509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32167274 + 32167275.

It is an arithmetic number, because the mean of its divisors is an integer number (32167275).

Almost surely, 2^64334549 is an apocalyptic number.

It is an amenable number.

64334549 is a deficient number, since it is larger than the sum of its proper divisors (1).

64334549 is an equidigital number, since it uses as much as digits as its factorization.

64334549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 38.

The square root of 64334549 is about 8020.8820587265. The cubic root of 64334549 is about 400.6957661553.

The spelling of 64334549 in words is "sixty-four million, three hundred thirty-four thousand, five hundred forty-nine".