162689661 has 16 divisors (see below), whose sum is σ = 243510400. Its totient is φ = 107339904.

The previous prime is 162689641. The next prime is 162689671. The reversal of 162689661 is 166986261.

It is not a de Polignac number, because 162689661 - 2²³ = 154301053 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 (162689621) 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, 28441 + ... + 33678.

It is an arithmetic number, because the mean of its divisors is an integer number (15219400).

Almost surely, 2^162689661 is an apocalyptic number.

It is an amenable number.

162689661 is a deficient number, since it is larger than the sum of its proper divisors (80820739).

162689661 is an equidigital number, since it uses as much as digits as its factorization.

162689661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62225 (or 62219 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 162689661 is about 12754.9857310779. The cubic root of 162689661 is about 545.9086612094.

The spelling of 162689661 in words is "one hundred sixty-two million, six hundred eighty-nine thousand, six hundred sixty-one".