168609693 has 16 divisors (see below), whose sum is σ = 257505920. Its totient is φ = 96132096.

The previous prime is 168609691. The next prime is 168609697. The reversal of 168609693 is 396906861.

168609693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 168609693 - 2¹ = 168609691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168609691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 813 + ... + 18381.

It is an arithmetic number, because the mean of its divisors is an integer number (16094120).

Almost surely, 2^168609693 is an apocalyptic number.

It is an amenable number.

168609693 is a deficient number, since it is larger than the sum of its proper divisors (88896227).

168609693 is a wasteful number, since it uses less digits than its factorization.

168609693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18036.

The product of its (nonzero) digits is 419904, while the sum is 48.

The square root of 168609693 is about 12984.9795148086. The cubic root of 168609693 is about 552.4515281350.

The spelling of 168609693 in words is "one hundred sixty-eight million, six hundred nine thousand, six hundred ninety-three".