64900222 has 4 divisors (see below), whose sum is σ = 97350336. Its totient is φ = 32450110.

The previous prime is 64900217. The next prime is 64900223. The reversal of 64900222 is 22200946.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64900223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16225054 + ... + 16225057.

It is an arithmetic number, because the mean of its divisors is an integer number (24337584).

Almost surely, 2^64900222 is an apocalyptic number.

64900222 is a deficient number, since it is larger than the sum of its proper divisors (32450114).

64900222 is a wasteful number, since it uses less digits than its factorization.

64900222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32450113.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 64900222 is about 8056.0674028958. The cubic root of 64900222 is about 401.8667371786.

The spelling of 64900222 in words is "sixty-four million, nine hundred thousand, two hundred twenty-two".