663151 has 4 divisors (see below), whose sum is σ = 681112. Its totient is φ = 645192.

The previous prime is 663149. The next prime is 663161. The reversal of 663151 is 151366.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151366 = 2 ⋅75683.

It is a cyclic number.

It is not a de Polignac number, because 663151 - 2¹ = 663149 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 (663161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8925 + ... + 8998.

It is an arithmetic number, because the mean of its divisors is an integer number (170278).

2⁶⁶³¹⁵¹ is an apocalyptic number.

663151 is a deficient number, since it is larger than the sum of its proper divisors (17961).

663151 is a wasteful number, since it uses less digits than its factorization.

663151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17960.

The product of its digits is 540, while the sum is 22.

The square root of 663151 is about 814.3408377332. The cubic root of 663151 is about 87.2042148595.

The spelling of 663151 in words is "six hundred sixty-three thousand, one hundred fifty-one".