66226304 has 16 divisors (see below), whose sum is σ = 131935470. Its totient is φ = 33113088.

The previous prime is 66226301. The next prime is 66226313. The reversal of 66226304 is 40362266.

It can be written as a sum of positive squares in only one way, i.e., 44622400 + 21603904 = 6680^2 + 4648^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66226301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258569 + ... + 258824.

Almost surely, 2^66226304 is an apocalyptic number.

66226304 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

66226304 is a deficient number, since it is larger than the sum of its proper divisors (65709166).

66226304 is an equidigital number, since it uses as much as digits as its factorization.

66226304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517407 (or 517395 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 66226304 is about 8137.9545341566. The cubic root of 66226304 is about 404.5853684689.

The spelling of 66226304 in words is "sixty-six million, two hundred twenty-six thousand, three hundred four".