66610363 has 8 divisors (see below), whose sum is σ = 68636736. Its totient is φ = 64603200.

The previous prime is 66610343. The next prime is 66610367. The reversal of 66610363 is 36301666.

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

It is a cyclic number.

It is not a de Polignac number, because 66610363 - 2⁵ = 66610331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66610367) 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, 2398 + ... + 11788.

It is an arithmetic number, because the mean of its divisors is an integer number (8579592).

Almost surely, 2^66610363 is an apocalyptic number.

66610363 is a deficient number, since it is larger than the sum of its proper divisors (2026373).

66610363 is a wasteful number, since it uses less digits than its factorization.

66610363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9605.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 66610363 is about 8161.5171996388. The cubic root of 66610363 is about 405.3659507965.

The spelling of 66610363 in words is "sixty-six million, six hundred ten thousand, three hundred sixty-three".