66298558 has 16 divisors (see below), whose sum is σ = 106305696. Its totient is φ = 30933760.

The previous prime is 66298549. The next prime is 66298567. The reversal of 66298558 is 85589266.

It is an interprime number because it is at equal distance from previous prime (66298549) and next prime (66298567).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15691 + ... + 19462.

It is an arithmetic number, because the mean of its divisors is an integer number (6644106).

Almost surely, 2^66298558 is an apocalyptic number.

66298558 is a deficient number, since it is larger than the sum of its proper divisors (40007138).

66298558 is a wasteful number, since it uses less digits than its factorization.

66298558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35219.

The product of its digits is 1036800, while the sum is 49.

The square root of 66298558 is about 8142.3926458996. The cubic root of 66298558 is about 404.7324514490.

The spelling of 66298558 in words is "sixty-six million, two hundred ninety-eight thousand, five hundred fifty-eight".