66651206 has 8 divisors (see below), whose sum is σ = 100349280. Its totient is φ = 33201448.

The previous prime is 66651119. The next prime is 66651253. The reversal of 66651206 is 60215666.

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

It is a super-2 number, since 2×66651206² = 8884766522508872, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61406 + ... + 62481.

It is an arithmetic number, because the mean of its divisors is an integer number (12543660).

Almost surely, 2^66651206 is an apocalyptic number.

66651206 is a deficient number, since it is larger than the sum of its proper divisors (33698074).

66651206 is a wasteful number, since it uses less digits than its factorization.

66651206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124158.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 66651206 is about 8164.0189857692. The cubic root of 66651206 is about 405.4487856490.

The spelling of 66651206 in words is "sixty-six million, six hundred fifty-one thousand, two hundred six".