66490298 has 64 divisors (see below), whose sum is σ = 126593280. Its totient is φ = 25546752.

The previous prime is 66490261. The next prime is 66490321. The reversal of 66490298 is 89209466.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 747038 + ... + 747126.

It is an arithmetic number, because the mean of its divisors is an integer number (1978020).

Almost surely, 2^66490298 is an apocalyptic number.

66490298 is a deficient number, since it is larger than the sum of its proper divisors (60102982).

66490298 is a wasteful number, since it uses less digits than its factorization.

66490298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 66490298 is about 8154.1583256643. The cubic root of 66490298 is about 405.1222473012.

The spelling of 66490298 in words is "sixty-six million, four hundred ninety thousand, two hundred ninety-eight".