66228606 has 24 divisors (see below), whose sum is σ = 144035424. Its totient is φ = 21993120.

The previous prime is 66228601. The next prime is 66228611. The reversal of 66228606 is 60682266.

It is an interprime number because it is at equal distance from previous prime (66228601) and next prime (66228611).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66228601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1911 + ... + 11666.

It is an arithmetic number, because the mean of its divisors is an integer number (6001476).

Almost surely, 2^66228606 is an apocalyptic number.

66228606 is an abundant number, since it is smaller than the sum of its proper divisors (77806818).

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

66228606 is a wasteful number, since it uses less digits than its factorization.

66228606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13856 (or 13853 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 66228606 is about 8138.0959689598. The cubic root of 66228606 is about 404.5900561568.

The spelling of 66228606 in words is "sixty-six million, two hundred twenty-eight thousand, six hundred six".