663601145 has 8 divisors (see below), whose sum is σ = 807537600. Its totient is φ = 523403440.

The previous prime is 663601139. The next prime is 663601157. The reversal of 663601145 is 541106366.

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

It is not a de Polignac number, because 663601145 - 2¹² = 663597049 is a prime.

It is a super-2 number, since 2×663601145² = 880732959290622050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 934295 + ... + 935004.

It is an arithmetic number, because the mean of its divisors is an integer number (100942200).

Almost surely, 2^663601145 is an apocalyptic number.

It is an amenable number.

663601145 is a deficient number, since it is larger than the sum of its proper divisors (143936455).

663601145 is a wasteful number, since it uses less digits than its factorization.

663601145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869375.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 663601145 is about 25760.4570029338. The cubic root of 663601145 is about 872.2394172048.

The spelling of 663601145 in words is "six hundred sixty-three million, six hundred one thousand, one hundred forty-five".