66063982 has 4 divisors (see below), whose sum is σ = 99095976. Its totient is φ = 33031990.

The previous prime is 66063967. The next prime is 66063983. The reversal of 66063982 is 28936066.

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 (66063983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16515994 + ... + 16515997.

It is an arithmetic number, because the mean of its divisors is an integer number (24773994).

Almost surely, 2^66063982 is an apocalyptic number.

66063982 is a deficient number, since it is larger than the sum of its proper divisors (33031994).

66063982 is a wasteful number, since it uses less digits than its factorization.

66063982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33031993.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 66063982 is about 8127.9752706317. The cubic root of 66063982 is about 404.2545490877.

The spelling of 66063982 in words is "sixty-six million, sixty-three thousand, nine hundred eighty-two".