66010990 has 16 divisors (see below), whose sum is σ = 119076480. Its totient is φ = 26347360.

The previous prime is 66010969. The next prime is 66010991. The reversal of 66010990 is 9901066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66010991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2101 + ... + 11680.

It is an arithmetic number, because the mean of its divisors is an integer number (7442280).

Almost surely, 2^66010990 is an apocalyptic number.

66010990 is a deficient number, since it is larger than the sum of its proper divisors (53065490).

66010990 is a wasteful number, since it uses less digits than its factorization.

66010990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14267.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 66010990 is about 8124.7147642240. The cubic root of 66010990 is about 404.1464317404.

The spelling of 66010990 in words is "sixty-six million, ten thousand, nine hundred ninety".