66427467 has 8 divisors (see below), whose sum is σ = 89157120. Its totient is φ = 43991400.

The previous prime is 66427457. The next prime is 66427489. The reversal of 66427467 is 76472466.

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

It is not a de Polignac number, because 66427467 - 2²⁰ = 65378891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66427447) 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, 72867 + ... + 73772.

It is an arithmetic number, because the mean of its divisors is an integer number (11144640).

Almost surely, 2^66427467 is an apocalyptic number.

66427467 is a deficient number, since it is larger than the sum of its proper divisors (22729653).

66427467 is a wasteful number, since it uses less digits than its factorization.

66427467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146793.

The product of its digits is 338688, while the sum is 42.

The square root of 66427467 is about 8150.3047182299. The cubic root of 66427467 is about 404.9945983123.

The spelling of 66427467 in words is "sixty-six million, four hundred twenty-seven thousand, four hundred sixty-seven".