66498039 has 24 divisors (see below), whose sum is σ = 97718400. Its totient is φ = 43571088.

The previous prime is 66498031. The next prime is 66498071. The reversal of 66498039 is 93089466.

It is not a de Polignac number, because 66498039 - 2³ = 66498031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66497985 and 66498003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66498031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191464 + ... + 191810.

It is an arithmetic number, because the mean of its divisors is an integer number (4071600).

Almost surely, 2^66498039 is an apocalyptic number.

66498039 is a deficient number, since it is larger than the sum of its proper divisors (31220361).

66498039 is a wasteful number, since it uses less digits than its factorization.

66498039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 66498039 is about 8154.6329776392. The cubic root of 66498039 is about 405.1379685403.

The spelling of 66498039 in words is "sixty-six million, four hundred ninety-eight thousand, thirty-nine".