66298190 has 32 divisors (see below), whose sum is σ = 142318080. Its totient is φ = 21741984.

The previous prime is 66298187. The next prime is 66298207. The reversal of 66298190 is 9189266.

It is a super-2 number, since 2×66298190² = 8790899994552200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18980 + ... + 22199.

It is an arithmetic number, because the mean of its divisors is an integer number (4447440).

Almost surely, 2^66298190 is an apocalyptic number.

66298190 is an abundant number, since it is smaller than the sum of its proper divisors (76019890).

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

66298190 is a wasteful number, since it uses less digits than its factorization.

66298190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41216.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 66298190 is about 8142.3700480880. The cubic root of 66298190 is about 404.7317026050.

The spelling of 66298190 in words is "sixty-six million, two hundred ninety-eight thousand, one hundred ninety".