66220467 has 8 divisors (see below), whose sum is σ = 88989696. Its totient is φ = 43799112.

The previous prime is 66220463. The next prime is 66220477. The reversal of 66220467 is 76402266.

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

It is not a de Polignac number, because 66220467 - 2² = 66220463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66220463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86523 + ... + 87284.

It is an arithmetic number, because the mean of its divisors is an integer number (11123712).

Almost surely, 2^66220467 is an apocalyptic number.

66220467 is a deficient number, since it is larger than the sum of its proper divisors (22769229).

66220467 is a wasteful number, since it uses less digits than its factorization.

66220467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173937.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 66220467 is about 8137.5958980524. The cubic root of 66220467 is about 404.5734817812.

The spelling of 66220467 in words is "sixty-six million, two hundred twenty thousand, four hundred sixty-seven".