66206662 has 8 divisors (see below), whose sum is σ = 99390456. Its totient is φ = 33076512.

The previous prime is 66206639. The next prime is 66206663. The reversal of 66206662 is 26660266.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66206663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10168 + ... + 15355.

It is an arithmetic number, because the mean of its divisors is an integer number (12423807).

Almost surely, 2^66206662 is an apocalyptic number.

66206662 is a deficient number, since it is larger than the sum of its proper divisors (33183794).

66206662 is a wasteful number, since it uses less digits than its factorization.

66206662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26822.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 66206662 is about 8136.7476303496. The cubic root of 66206662 is about 404.5453659769.

The spelling of 66206662 in words is "sixty-six million, two hundred six thousand, six hundred sixty-two".