66315442 has 8 divisors (see below), whose sum is σ = 99677232. Its totient is φ = 33089700.

The previous prime is 66315439. The next prime is 66315443. The reversal of 66315442 is 24451366.

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

It is not an unprimeable number, because it can be changed into a prime (66315443) 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, 32784 + ... + 34747.

It is an arithmetic number, because the mean of its divisors is an integer number (12459654).

Almost surely, 2^66315442 is an apocalyptic number.

66315442 is a deficient number, since it is larger than the sum of its proper divisors (33361790).

66315442 is a wasteful number, since it uses less digits than its factorization.

66315442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68024.

The product of its digits is 17280, while the sum is 31.

The square root of 66315442 is about 8143.4293758834. The cubic root of 66315442 is about 404.7668057542.

The spelling of 66315442 in words is "sixty-six million, three hundred fifteen thousand, four hundred forty-two".