66963494 has 16 divisors (see below), whose sum is σ = 111903120. Its totient is φ = 29840160.

The previous prime is 66963439. The next prime is 66963499. The reversal of 66963494 is 49436966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66963499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43652 + ... + 45159.

It is an arithmetic number, because the mean of its divisors is an integer number (6993945).

Almost surely, 2^66963494 is an apocalyptic number.

66963494 is a deficient number, since it is larger than the sum of its proper divisors (44939626).

66963494 is a wasteful number, since it uses less digits than its factorization.

66963494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88855.

The product of its digits is 839808, while the sum is 47.

The square root of 66963494 is about 8183.1225091648. The cubic root of 66963494 is about 406.0810300384.

The spelling of 66963494 in words is "sixty-six million, nine hundred sixty-three thousand, four hundred ninety-four".