66722466 has 8 divisors (see below), whose sum is σ = 133444944. Its totient is φ = 22240820.

The previous prime is 66722443. The next prime is 66722479. The reversal of 66722466 is 66422766.

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

66722466 is an admirable 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, 5560200 + ... + 5560211.

It is an arithmetic number, because the mean of its divisors is an integer number (16680618).

Almost surely, 2^66722466 is an apocalyptic number.

66722466 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66722466 is a wasteful number, since it uses less digits than its factorization.

66722466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11120416.

The product of its digits is 145152, while the sum is 39.

The square root of 66722466 is about 8168.3820919445. The cubic root of 66722466 is about 405.5932290962.

The spelling of 66722466 in words is "sixty-six million, seven hundred twenty-two thousand, four hundred sixty-six".