64773222 has 16 divisors (see below), whose sum is σ = 132559680. Its totient is φ = 21088872.

The previous prime is 64773197. The next prime is 64773227. The reversal of 64773222 is 22237746.

It is a super-2 number, since 2×64773222² = 8391140576522568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64773227) 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, 125272 + ... + 125787.

It is an arithmetic number, because the mean of its divisors is an integer number (8284980).

Almost surely, 2^64773222 is an apocalyptic number.

64773222 is an abundant number, since it is smaller than the sum of its proper divisors (67786458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64773222 is a wasteful number, since it uses less digits than its factorization.

64773222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251107.

The product of its digits is 28224, while the sum is 33.

The square root of 64773222 is about 8048.1812852346. The cubic root of 64773222 is about 401.6044350327.

The spelling of 64773222 in words is "sixty-four million, seven hundred seventy-three thousand, two hundred twenty-two".