65668986 has 12 divisors (see below), whose sum is σ = 142282842. Its totient is φ = 21889656.

The previous prime is 65668949. The next prime is 65669017. The reversal of 65668986 is 68986656.

It can be written as a sum of positive squares in only one way, i.e., 61544025 + 4124961 = 7845^2 + 2031^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1824121 + ... + 1824156.

Almost surely, 2^65668986 is an apocalyptic number.

65668986 is an abundant number, since it is smaller than the sum of its proper divisors (76613856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65668986 is a wasteful number, since it uses less digits than its factorization.

65668986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3648285 (or 3648282 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 65668986 is about 8103.6402931028. The cubic root of 65668986 is about 403.4472598205.

The spelling of 65668986 in words is "sixty-five million, six hundred sixty-eight thousand, nine hundred eighty-six".