66164050 has 12 divisors (see below), whose sum is σ = 123065226. Its totient is φ = 26465600.

The previous prime is 66164027. The next prime is 66164053. The reversal of 66164050 is 5046166.

It can be written as a sum of positive squares in 3 ways, for example, as 51883209 + 14280841 = 7203^2 + 3779^2 .

It is not an unprimeable number, because it can be changed into a prime (66164053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 661591 + ... + 661690.

Almost surely, 2^66164050 is an apocalyptic number.

66164050 is a deficient number, since it is larger than the sum of its proper divisors (56901176).

66164050 is a wasteful number, since it uses less digits than its factorization.

66164050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323293 (or 1323288 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 66164050 is about 8134.1287179390. The cubic root of 66164050 is about 404.4585560483.

It can be divided in two parts, 6 and 6164050, that multiplied together give a triangular number (36984300 = T₈₆₀₀).

The spelling of 66164050 in words is "sixty-six million, one hundred sixty-four thousand, fifty".