164777868 has 48 divisors (see below), whose sum is σ = 428638560. Its totient is φ = 54741312.

The previous prime is 164777839. The next prime is 164777869. The reversal of 164777868 is 868777461.

164777868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (164777869) 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, 31830 + ... + 36642.

It is an arithmetic number, because the mean of its divisors is an integer number (8929970).

Almost surely, 2^164777868 is an apocalyptic number.

164777868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

164777868 is an abundant number, since it is smaller than the sum of its proper divisors (263860692).

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

164777868 is a wasteful number, since it uses less digits than its factorization.

164777868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5143 (or 5135 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The square root of 164777868 is about 12836.5831902419. The cubic root of 164777868 is about 548.2344131836.

The spelling of 164777868 in words is "one hundred sixty-four million, seven hundred seventy-seven thousand, eight hundred sixty-eight".