66498059 has 4 divisors (see below), whose sum is σ = 67183704. Its totient is φ = 65812416.

The previous prime is 66498031. The next prime is 66498071. The reversal of 66498059 is 95089466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66498059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66498079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342677 + ... + 342870.

It is an arithmetic number, because the mean of its divisors is an integer number (16795926).

Almost surely, 2^66498059 is an apocalyptic number.

66498059 is a deficient number, since it is larger than the sum of its proper divisors (685645).

66498059 is an equidigital number, since it uses as much as digits as its factorization.

66498059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685644.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 66498059 is about 8154.6342039358. The cubic root of 66498059 is about 405.1380091568.

The spelling of 66498059 in words is "sixty-six million, four hundred ninety-eight thousand, fifty-nine".