65668099 has 8 divisors (see below), whose sum is σ = 76077920. Its totient is φ = 55515456.

The previous prime is 65668091. The next prime is 65668111. The reversal of 65668099 is 99086656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65668099 - 2³ = 65668091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65668091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63744 + ... + 64765.

It is an arithmetic number, because the mean of its divisors is an integer number (9509740).

Almost surely, 2^65668099 is an apocalyptic number.

65668099 is a deficient number, since it is larger than the sum of its proper divisors (10409821).

65668099 is a wasteful number, since it uses less digits than its factorization.

65668099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128589.

The product of its (nonzero) digits is 699840, while the sum is 49.

The square root of 65668099 is about 8103.5855644276. The cubic root of 65668099 is about 403.4454433398.

The spelling of 65668099 in words is "sixty-five million, six hundred sixty-eight thousand, ninety-nine".