66536466 has 16 divisors (see below), whose sum is σ = 133316064. Its totient is φ = 22138304.

The previous prime is 66536383. The next prime is 66536473. The reversal of 66536466 is 66463566.

It is a happy number.

66536466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6471 + ... + 13226.

It is an arithmetic number, because the mean of its divisors is an integer number (8332254).

Almost surely, 2^66536466 is an apocalyptic number.

66536466 is an abundant number, since it is smaller than the sum of its proper divisors (66779598).

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

66536466 is a wasteful number, since it uses less digits than its factorization.

66536466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20265.

The product of its digits is 466560, while the sum is 42.

The square root of 66536466 is about 8156.9887826330. The cubic root of 66536466 is about 405.2159920887.

Subtracting from 66536466 its reverse (66463566), we obtain a square (72900 = 270²).

It can be divided in two parts, 6 and 6536466, that multiplied together give a triangular number (39218796 = T₈₈₅₆).

The spelling of 66536466 in words is "sixty-six million, five hundred thirty-six thousand, four hundred sixty-six".