66453366 has 32 divisors (see below), whose sum is σ = 152183808. Its totient is φ = 18950400.

The previous prime is 66453353. The next prime is 66453377. The reversal of 66453366 is 66335466.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27091 + ... + 29441.

It is an arithmetic number, because the mean of its divisors is an integer number (4755744).

Almost surely, 2^66453366 is an apocalyptic number.

66453366 is an abundant number, since it is smaller than the sum of its proper divisors (85730442).

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

66453366 is a wasteful number, since it uses less digits than its factorization.

66453366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3036.

The product of its digits is 233280, while the sum is 39.

The square root of 66453366 is about 8151.8933996956. The cubic root of 66453366 is about 405.0472250982.

It can be divided in two parts, 6645 and 3366, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 66453366 in words is "sixty-six million, four hundred fifty-three thousand, three hundred sixty-six".