66356061 has 8 divisors (see below), whose sum is σ = 89974560. Its totient is φ = 43487472.

The previous prime is 66356041. The next prime is 66356071. The reversal of 66356061 is 16065366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66356061 - 2⁵ = 66356029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66356011) 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, 187270 + ... + 187623.

It is an arithmetic number, because the mean of its divisors is an integer number (11246820).

Almost surely, 2^66356061 is an apocalyptic number.

It is an amenable number.

66356061 is a deficient number, since it is larger than the sum of its proper divisors (23618499).

66356061 is a wasteful number, since it uses less digits than its factorization.

66356061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374955.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 66356061 is about 8145.9229679638. The cubic root of 66356061 is about 404.8494303874.

The spelling of 66356061 in words is "sixty-six million, three hundred fifty-six thousand, sixty-one".