66190370 has 16 divisors (see below), whose sum is σ = 120054528. Its totient is φ = 26273520.

The previous prime is 66190361. The next prime is 66190381. The reversal of 66190370 is 7309166.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23954 + ... + 26573.

It is an arithmetic number, because the mean of its divisors is an integer number (7503408).

Almost surely, 2^66190370 is an apocalyptic number.

66190370 is a deficient number, since it is larger than the sum of its proper divisors (53864158).

66190370 is a wasteful number, since it uses less digits than its factorization.

66190370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50665.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 66190370 is about 8135.7464316435. The cubic root of 66190370 is about 404.5121800225.

The spelling of 66190370 in words is "sixty-six million, one hundred ninety thousand, three hundred seventy".