66949498 has 32 divisors (see below), whose sum is σ = 126812160. Its totient is φ = 25749360.

The previous prime is 66949471. The next prime is 66949507. The reversal of 66949498 is 89494966.

It is an unprimeable number.

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, 9415 + ... + 14917.

It is an arithmetic number, because the mean of its divisors is an integer number (3962880).

Almost surely, 2^66949498 is an apocalyptic number.

66949498 is a deficient number, since it is larger than the sum of its proper divisors (59862662).

66949498 is a wasteful number, since it uses less digits than its factorization.

66949498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5602.

The product of its digits is 3359232, while the sum is 55.

The square root of 66949498 is about 8182.2672896942. The cubic root of 66949498 is about 406.0527364824.

The spelling of 66949498 in words is "sixty-six million, nine hundred forty-nine thousand, four hundred ninety-eight".