168620045 has 16 divisors (see below), whose sum is σ = 220993920. Its totient is φ = 122491200.

The previous prime is 168620033. The next prime is 168620051. The reversal of 168620045 is 540026861.

It is not a de Polignac number, because 168620045 - 2¹⁶ = 168554509 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 168619993 and 168620020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82091 + ... + 84119.

It is an arithmetic number, because the mean of its divisors is an integer number (13812120).

Almost surely, 2^168620045 is an apocalyptic number.

It is an amenable number.

168620045 is a deficient number, since it is larger than the sum of its proper divisors (52373875).

168620045 is a wasteful number, since it uses less digits than its factorization.

168620045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3556.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 168620045 is about 12985.3781231045. The cubic root of 168620045 is about 552.4628340512.

The spelling of 168620045 in words is "one hundred sixty-eight million, six hundred twenty thousand, forty-five".