66249394 has 16 divisors (see below), whose sum is σ = 101005632. Its totient is φ = 32585328.

The previous prime is 66249383. The next prime is 66249419. The reversal of 66249394 is 49394266.

It is a self number, because there is not a number n which added to its sum of digits gives 66249394.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32592 + ... + 34564.

It is an arithmetic number, because the mean of its divisors is an integer number (6312852).

Almost surely, 2^66249394 is an apocalyptic number.

66249394 is a deficient number, since it is larger than the sum of its proper divisors (34756238).

66249394 is a wasteful number, since it uses less digits than its factorization.

66249394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2241.

The product of its digits is 279936, while the sum is 43.

The square root of 66249394 is about 8139.3730716806. The cubic root of 66249394 is about 404.6323829738.

The spelling of 66249394 in words is "sixty-six million, two hundred forty-nine thousand, three hundred ninety-four".