66164452 has 6 divisors (see below), whose sum is σ = 115787798. Its totient is φ = 33082224.

The previous prime is 66164437. The next prime is 66164489. The reversal of 66164452 is 25446166.

It can be written as a sum of positive squares in only one way, i.e., 65028096 + 1136356 = 8064^2 + 1066^2 .

It is a super-3 number, since 3×66164452³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8270553 + ... + 8270560.

Almost surely, 2^66164452 is an apocalyptic number.

It is an amenable number.

66164452 is a deficient number, since it is larger than the sum of its proper divisors (49623346).

66164452 is a wasteful number, since it uses less digits than its factorization.

66164452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16541117 (or 16541115 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 66164452 is about 8134.1534285997. The cubic root of 66164452 is about 404.4593751840.

The spelling of 66164452 in words is "sixty-six million, one hundred sixty-four thousand, four hundred fifty-two".