66490335 has 32 divisors (see below), whose sum is σ = 119335680. Its totient is φ = 35122464.

The previous prime is 66490321. The next prime is 66490337. The reversal of 66490335 is 53309466.

66490335 is a `hidden beast` number, since 6 + 649 + 0 + 3 + 3 + 5 = 666.

It is not a de Polignac number, because 66490335 - 2¹² = 66486239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66490335.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66490337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12144 + ... + 16746.

It is an arithmetic number, because the mean of its divisors is an integer number (3729240).

Almost surely, 2^66490335 is an apocalyptic number.

66490335 is a deficient number, since it is larger than the sum of its proper divisors (52845345).

66490335 is a wasteful number, since it uses less digits than its factorization.

66490335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4724 (or 4718 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 66490335 is about 8154.1605944450. The cubic root of 66490335 is about 405.1223224476.

The spelling of 66490335 in words is "sixty-six million, four hundred ninety thousand, three hundred thirty-five".