66317446 has 16 divisors (see below), whose sum is σ = 107355024. Its totient is φ = 30543264.

The previous prime is 66317443. The next prime is 66317473. The reversal of 66317446 is 64471366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66317443) 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, 11160 + ... + 16036.

It is an arithmetic number, because the mean of its divisors is an integer number (6709689).

Almost surely, 2^66317446 is an apocalyptic number.

66317446 is a deficient number, since it is larger than the sum of its proper divisors (41037578).

66317446 is a wasteful number, since it uses less digits than its factorization.

66317446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5415.

The product of its digits is 72576, while the sum is 37.

The square root of 66317446 is about 8143.5524189386. The cubic root of 66317446 is about 404.7708829570.

The spelling of 66317446 in words is "sixty-six million, three hundred seventeen thousand, four hundred forty-six".