66736682 has 4 divisors (see below), whose sum is σ = 100105026. Its totient is φ = 33368340.

The previous prime is 66736619. The next prime is 66736693. The reversal of 66736682 is 28663766.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28663766 = 2 ⋅14331883.

It can be written as a sum of positive squares in only one way, i.e., 53421481 + 13315201 = 7309^2 + 3649^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16684169 + ... + 16684172.

Almost surely, 2^66736682 is an apocalyptic number.

66736682 is a deficient number, since it is larger than the sum of its proper divisors (33368344).

66736682 is a wasteful number, since it uses less digits than its factorization.

66736682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33368343.

The product of its digits is 435456, while the sum is 44.

The square root of 66736682 is about 8169.2522301616. The cubic root of 66736682 is about 405.6220325075.

The spelling of 66736682 in words is "sixty-six million, seven hundred thirty-six thousand, six hundred eighty-two".