161006868 has 36 divisors (see below), whose sum is σ = 443989728. Its totient is φ = 48789840.

The previous prime is 161006863. The next prime is 161006873. The reversal of 161006868 is 868600161.

It is an interprime number because it is at equal distance from previous prime (161006863) and next prime (161006873).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161006863) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 202896 + ... + 203687.

It is an arithmetic number, because the mean of its divisors is an integer number (12333048).

Almost surely, 2^161006868 is an apocalyptic number.

161006868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

161006868 is an abundant number, since it is smaller than the sum of its proper divisors (282982860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161006868 is a wasteful number, since it uses less digits than its factorization.

161006868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406604 (or 406599 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 161006868 is about 12688.8481746768. The cubic root of 161006868 is about 544.0199179919.

The spelling of 161006868 in words is "one hundred sixty-one million, six thousand, eight hundred sixty-eight".