663870149 has 8 divisors (see below), whose sum is σ = 669690720. Its totient is φ = 658071216.

The previous prime is 663870143. The next prime is 663870157. The reversal of 663870149 is 941078366.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-663870149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663870143) 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, 59582 + ... + 69840.

It is an arithmetic number, because the mean of its divisors is an integer number (83711340).

Almost surely, 2^663870149 is an apocalyptic number.

It is an amenable number.

663870149 is a deficient number, since it is larger than the sum of its proper divisors (5820571).

663870149 is a wasteful number, since it uses less digits than its factorization.

663870149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10819.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 663870149 is about 25765.6777322080. The cubic root of 663870149 is about 872.3572611820.

The spelling of 663870149 in words is "six hundred sixty-three million, eight hundred seventy thousand, one hundred forty-nine".