66164116 has 6 divisors (see below), whose sum is σ = 115787210. Its totient is φ = 33082056.

The previous prime is 66164107. The next prime is 66164141. The reversal of 66164116 is 61146166.

It can be written as a sum of positive squares in only one way, i.e., 58064400 + 8099716 = 7620^2 + 2846^2 .

It is a super-2 number, since 2×66164116² = 8755380492122912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8270511 + ... + 8270518.

Almost surely, 2^66164116 is an apocalyptic number.

It is an amenable number.

66164116 is a deficient number, since it is larger than the sum of its proper divisors (49623094).

66164116 is a wasteful number, since it uses less digits than its factorization.

66164116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16541033 (or 16541031 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 66164116 is about 8134.1327749183. The cubic root of 66164116 is about 404.4586905334.

The spelling of 66164116 in words is "sixty-six million, one hundred sixty-four thousand, one hundred sixteen".