66250748 has 12 divisors (see below), whose sum is σ = 117087432. Its totient is φ = 32797200.

The previous prime is 66250747. The next prime is 66250753. The reversal of 66250748 is 84705266.

It is a happy number.

It is a super-2 number, since 2×66250748² = 8778323221119008, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66250747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81590 + ... + 82397.

It is an arithmetic number, because the mean of its divisors is an integer number (9757286).

Almost surely, 2^66250748 is an apocalyptic number.

It is an amenable number.

66250748 is a deficient number, since it is larger than the sum of its proper divisors (50836684).

66250748 is a wasteful number, since it uses less digits than its factorization.

66250748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164092 (or 164090 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 66250748 is about 8139.4562471949. The cubic root of 66250748 is about 404.6351395701.

The spelling of 66250748 in words is "sixty-six million, two hundred fifty thousand, seven hundred forty-eight".