66018195 has 24 divisors (see below), whose sum is σ = 115045632. Its totient is φ = 35020800.

The previous prime is 66018163. The next prime is 66018263. The reversal of 66018195 is 59181066.

It is not a de Polignac number, because 66018195 - 2⁵ = 66018163 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4755 + ... + 12435.

It is an arithmetic number, because the mean of its divisors is an integer number (4793568).

Almost surely, 2^66018195 is an apocalyptic number.

66018195 is a deficient number, since it is larger than the sum of its proper divisors (49027437).

66018195 is a wasteful number, since it uses less digits than its factorization.

66018195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7883 (or 7880 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 66018195 is about 8125.1581523069. The cubic root of 66018195 is about 404.1611351967.

The spelling of 66018195 in words is "sixty-six million, eighteen thousand, one hundred ninety-five".