65944966 has 4 divisors (see below), whose sum is σ = 98917452. Its totient is φ = 32972482.

The previous prime is 65944961. The next prime is 65944969. The reversal of 65944966 is 66944956.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65944961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16486240 + ... + 16486243.

It is an arithmetic number, because the mean of its divisors is an integer number (24729363).

Almost surely, 2^65944966 is an apocalyptic number.

65944966 is a deficient number, since it is larger than the sum of its proper divisors (32972486).

65944966 is a wasteful number, since it uses less digits than its factorization.

65944966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32972485.

The product of its digits is 1399680, while the sum is 49.

The square root of 65944966 is about 8120.6505897003. The cubic root of 65944966 is about 404.0116447645.

The spelling of 65944966 in words is "sixty-five million, nine hundred forty-four thousand, nine hundred sixty-six".