66059895 has 32 divisors (see below), whose sum is σ = 116121600. Its totient is φ = 31802240.

The previous prime is 66059869. The next prime is 66059921. The reversal of 66059895 is 59895066.

It is an interprime number because it is at equal distance from previous prime (66059869) and next prime (66059921).

It is not a de Polignac number, because 66059895 - 2⁶ = 66059831 is a prime.

It is a super-2 number, since 2×66059895² = 8727819454822050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23242 + ... + 25928.

It is an arithmetic number, because the mean of its divisors is an integer number (3628800).

Almost surely, 2^66059895 is an apocalyptic number.

66059895 is a deficient number, since it is larger than the sum of its proper divisors (50061705).

66059895 is a wasteful number, since it uses less digits than its factorization.

66059895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855.

The product of its (nonzero) digits is 583200, while the sum is 48.

The square root of 66059895 is about 8127.7238511160. The cubic root of 66059895 is about 404.2462126116.

The spelling of 66059895 in words is "sixty-six million, fifty-nine thousand, eight hundred ninety-five".