66361018 has 8 divisors (see below), whose sum is σ = 102752640. Its totient is φ = 32110140.

The previous prime is 66361007. The next prime is 66361051. The reversal of 66361018 is 81016366.

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

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535108 + ... + 535231.

It is an arithmetic number, because the mean of its divisors is an integer number (12844080).

Almost surely, 2^66361018 is an apocalyptic number.

66361018 is a deficient number, since it is larger than the sum of its proper divisors (36391622).

66361018 is a wasteful number, since it uses less digits than its factorization.

66361018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070372.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 66361018 is about 8146.2272249183. The cubic root of 66361018 is about 404.8595112985.

The spelling of 66361018 in words is "sixty-six million, three hundred sixty-one thousand, eighteen".