66476494 has 32 divisors (see below), whose sum is σ = 123940800. Its totient is φ = 26085888.

The previous prime is 66476491. The next prime is 66476507. The reversal of 66476494 is 49467466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66476491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5032 + ... + 12580.

It is an arithmetic number, because the mean of its divisors is an integer number (3873150).

Almost surely, 2^66476494 is an apocalyptic number.

66476494 is a deficient number, since it is larger than the sum of its proper divisors (57464306).

66476494 is a wasteful number, since it uses less digits than its factorization.

66476494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7612.

The product of its digits is 870912, while the sum is 46.

The square root of 66476494 is about 8153.3118424356. The cubic root of 66476494 is about 405.0942096540.

Subtracting from 66476494 its reverse (49467466), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 66476494 in words is "sixty-six million, four hundred seventy-six thousand, four hundred ninety-four".