66498066 has 24 divisors (see below), whose sum is σ = 145405260. Its totient is φ = 21962016.

The previous prime is 66498031. The next prime is 66498071. The reversal of 66498066 is 66089466.

It can be written as a sum of positive squares in 2 ways, for example, as 62869041 + 3629025 = 7929^2 + 1905^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14985 + ... + 18908.

Almost surely, 2^66498066 is an apocalyptic number.

66498066 is an abundant number, since it is smaller than the sum of its proper divisors (78907194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66498066 is a wasteful number, since it uses less digits than its factorization.

66498066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34010 (or 34007 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 66498066 is about 8154.6346331396. The cubic root of 66498066 is about 405.1380233726.

The spelling of 66498066 in words is "sixty-six million, four hundred ninety-eight thousand, sixty-six".