66260008 has 16 divisors (see below), whose sum is σ = 125062560. Its totient is φ = 32910000.

The previous prime is 66259993. The next prime is 66260023. The reversal of 66260008 is 80006266.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66259993) and next prime (66260023).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26218 + ... + 28633.

It is an arithmetic number, because the mean of its divisors is an integer number (7816410).

Almost surely, 2^66260008 is an apocalyptic number.

It is an amenable number.

66260008 is a deficient number, since it is larger than the sum of its proper divisors (58802552).

66260008 is a wasteful number, since it uses less digits than its factorization.

66260008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55008 (or 55004 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 66260008 is about 8140.0250613865. The cubic root of 66260008 is about 404.6539909137.

The spelling of 66260008 in words is "sixty-six million, two hundred sixty thousand, eight".