64221245 has 8 divisors (see below), whose sum is σ = 84071520. Its totient is φ = 46706320.

The previous prime is 64221229. The next prime is 64221253. The reversal of 64221245 is 54212246.

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

It is not a de Polignac number, because 64221245 - 2⁴ = 64221229 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 583775 + ... + 583884.

It is an arithmetic number, because the mean of its divisors is an integer number (10508940).

Almost surely, 2^64221245 is an apocalyptic number.

It is an amenable number.

64221245 is a deficient number, since it is larger than the sum of its proper divisors (19850275).

64221245 is a wasteful number, since it uses less digits than its factorization.

64221245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167675.

The product of its digits is 3840, while the sum is 26.

The square root of 64221245 is about 8013.8158825868. The cubic root of 64221245 is about 400.4603969666.

It can be divided in two parts, 6422 and 1245, that added together give a palindrome (7667).

The spelling of 64221245 in words is "sixty-four million, two hundred twenty-one thousand, two hundred forty-five".