66895582 has 16 divisors (see below), whose sum is σ = 111549312. Its totient is φ = 29878560.

The previous prime is 66895579. The next prime is 66895583. The reversal of 66895582 is 28559866.

It is a super-2 number, since 2×66895582² = 8950037782237448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66895583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40693 + ... + 42304.

It is an arithmetic number, because the mean of its divisors is an integer number (6971832).

Almost surely, 2^66895582 is an apocalyptic number.

66895582 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

66895582 is a deficient number, since it is larger than the sum of its proper divisors (44653730).

66895582 is a wasteful number, since it uses less digits than its factorization.

66895582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83043.

The product of its digits is 1036800, while the sum is 49.

The square root of 66895582 is about 8178.9719402869. The cubic root of 66895582 is about 405.9437059467.

The spelling of 66895582 in words is "sixty-six million, eight hundred ninety-five thousand, five hundred eighty-two".