64211249 has 8 divisors (see below), whose sum is σ = 67680360. Its totient is φ = 60825856.

The previous prime is 64211219. The next prime is 64211267. The reversal of 64211249 is 94211246.

It can be written as a sum of positive squares in 4 ways, for example, as 12730624 + 51480625 = 3568^2 + 7175^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64211249 - 2¹² = 64207153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64211209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19352 + ... + 22425.

It is an arithmetic number, because the mean of its divisors is an integer number (8460045).

Almost surely, 2^64211249 is an apocalyptic number.

It is an amenable number.

64211249 is a deficient number, since it is larger than the sum of its proper divisors (3469111).

64211249 is a wasteful number, since it uses less digits than its factorization.

64211249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41859.

The product of its digits is 3456, while the sum is 29.

The square root of 64211249 is about 8013.1921853903. The cubic root of 64211249 is about 400.4396187447.

The spelling of 64211249 in words is "sixty-four million, two hundred eleven thousand, two hundred forty-nine".