66797446 has 8 divisors (see below), whose sum is σ = 102640104. Its totient is φ = 32584080.

The previous prime is 66797443. The next prime is 66797453. The reversal of 66797446 is 64479766.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 66797446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66797441) 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, 407220 + ... + 407383.

It is an arithmetic number, because the mean of its divisors is an integer number (12830013).

Almost surely, 2^66797446 is an apocalyptic number.

66797446 is a deficient number, since it is larger than the sum of its proper divisors (35842658).

66797446 is a wasteful number, since it uses less digits than its factorization.

66797446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814646.

The product of its digits is 1524096, while the sum is 49.

The square root of 66797446 is about 8172.9704514332. The cubic root of 66797446 is about 405.7451019588.

The spelling of 66797446 in words is "sixty-six million, seven hundred ninety-seven thousand, four hundred forty-six".