169313663 has 4 divisors (see below), whose sum is σ = 170812128. Its totient is φ = 167815200.

The previous prime is 169313647. The next prime is 169313671. The reversal of 169313663 is 366313961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366313961 = 13 ⋅28177997.

It is a cyclic number.

It is not a de Polignac number, because 169313663 - 2⁴ = 169313647 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 (169343663) 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, 749063 + ... + 749288.

It is an arithmetic number, because the mean of its divisors is an integer number (42703032).

Almost surely, 2^169313663 is an apocalyptic number.

169313663 is a deficient number, since it is larger than the sum of its proper divisors (1498465).

169313663 is a wasteful number, since it uses less digits than its factorization.

169313663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498464.

The product of its digits is 52488, while the sum is 38.

The square root of 169313663 is about 13012.0583690667. The cubic root of 169313663 is about 553.2193157522.

The spelling of 169313663 in words is "one hundred sixty-nine million, three hundred thirteen thousand, six hundred sixty-three".