66171098 has 32 divisors (see below), whose sum is σ = 117936000. Its totient is φ = 27244224.

The previous prime is 66171097. The next prime is 66171101. The reversal of 66171098 is 89017166.

It is a super-2 number, since 2×66171098² = 8757228421051208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66171097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141461 + ... + 141927.

It is an arithmetic number, because the mean of its divisors is an integer number (3685500).

Almost surely, 2^66171098 is an apocalyptic number.

66171098 is a deficient number, since it is larger than the sum of its proper divisors (51764902).

66171098 is a wasteful number, since it uses less digits than its factorization.

66171098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 66171098 is about 8134.5619427232. The cubic root of 66171098 is about 404.4729169320.

The spelling of 66171098 in words is "sixty-six million, one hundred seventy-one thousand, ninety-eight".