663712145 has 8 divisors (see below), whose sum is σ = 813400704. Its totient is φ = 519672304.

The previous prime is 663712103. The next prime is 663712157. The reversal of 663712145 is 541217366.

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 663712145 - 2¹⁰ = 663711121 is a prime.

It is a super-2 number, since 2×663712145² = 881027622841002050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

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, 1411919 + ... + 1412388.

It is an arithmetic number, because the mean of its divisors is an integer number (101675088).

Almost surely, 2^663712145 is an apocalyptic number.

It is an amenable number.

663712145 is a deficient number, since it is larger than the sum of its proper divisors (149688559).

663712145 is a wasteful number, since it uses less digits than its factorization.

663712145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2824359.

The product of its digits is 30240, while the sum is 35.

The square root of 663712145 is about 25762.6113777311. The cubic root of 663712145 is about 872.2880474090.

The spelling of 663712145 in words is "six hundred sixty-three million, seven hundred twelve thousand, one hundred forty-five".