66110649 has 12 divisors (see below), whose sum is σ = 96889968. Its totient is φ = 40066840.

The previous prime is 66110647. The next prime is 66110677. The reversal of 66110649 is 94601166.

It is not a de Polignac number, because 66110649 - 2¹ = 66110647 is a prime.

It is a super-2 number, since 2×66110649² = 8741235822402402, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (66110647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90699 + ... + 91424.

It is an arithmetic number, because the mean of its divisors is an integer number (8074164).

Almost surely, 2^66110649 is an apocalyptic number.

It is an amenable number.

66110649 is a deficient number, since it is larger than the sum of its proper divisors (30779319).

66110649 is a wasteful number, since it uses less digits than its factorization.

66110649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182148 (or 182137 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 66110649 is about 8130.8455279878. The cubic root of 66110649 is about 404.3497139370.

The spelling of 66110649 in words is "sixty-six million, one hundred ten thousand, six hundred forty-nine".