157663 has 6 divisors (see below), whose sum is σ = 173432. Its totient is φ = 143220.

The previous prime is 157649. The next prime is 157667. The reversal of 157663 is 366751.

It is not a de Polignac number, because 157663 - 2¹⁷ = 26591 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13 and base 16.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 531 + ... + 772.

2¹⁵⁷⁶⁶³ is an apocalyptic number.

157663 is a deficient number, since it is larger than the sum of its proper divisors (15769).

157663 is a wasteful number, since it uses less digits than its factorization.

157663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325 (or 1314 counting only the distinct ones).

The product of its digits is 3780, while the sum is 28.

The square root of 157663 is about 397.0680042512. The cubic root of 157663 is about 54.0227384806.

It can be divided in two parts, 157 and 663, that added together give a triangular number (820 = T₄₀).

The spelling of 157663 in words is "one hundred fifty-seven thousand, six hundred sixty-three".