169087641 has 4 divisors (see below), whose sum is σ = 225450192. Its totient is φ = 112725092.

The previous prime is 169087621. The next prime is 169087643. The reversal of 169087641 is 146780961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 169087641 - 2⁹ = 169087129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 169087593 and 169087602.

It is not an unprimeable number, because it can be changed into a prime (169087643) 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, 28181271 + ... + 28181276.

It is an arithmetic number, because the mean of its divisors is an integer number (56362548).

Almost surely, 2^169087641 is an apocalyptic number.

It is an amenable number.

169087641 is a deficient number, since it is larger than the sum of its proper divisors (56362551).

169087641 is an equidigital number, since it uses as much as digits as its factorization.

169087641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56362550.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 169087641 is about 13003.3703707923. The cubic root of 169087641 is about 552.9730363221.

The spelling of 169087641 in words is "one hundred sixty-nine million, eighty-seven thousand, six hundred forty-one".