66534195 has 64 divisors (see below), whose sum is σ = 132894720. Its totient is φ = 27675648.

The previous prime is 66534163. The next prime is 66534203. The reversal of 66534195 is 59143566.

It is not a de Polignac number, because 66534195 - 2⁵ = 66534163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 107527 + ... + 108143.

It is an arithmetic number, because the mean of its divisors is an integer number (2076480).

Almost surely, 2^66534195 is an apocalyptic number.

66534195 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

66534195 is a deficient number, since it is larger than the sum of its proper divisors (66360525).

66534195 is a wasteful number, since it uses less digits than its factorization.

66534195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724.

The product of its digits is 97200, while the sum is 39.

The square root of 66534195 is about 8156.8495756634. The cubic root of 66534195 is about 405.2113818048.

The spelling of 66534195 in words is "sixty-six million, five hundred thirty-four thousand, one hundred ninety-five".