65998901 has 8 divisors (see below), whose sum is σ = 66744384. Its totient is φ = 65257920.

The previous prime is 65998883. The next prime is 65998903. The reversal of 65998901 is 10989956.

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 65998901 - 2¹⁸ = 65736757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65998903) 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, 34301 + ... + 36173.

It is an arithmetic number, because the mean of its divisors is an integer number (8343048).

Almost surely, 2^65998901 is an apocalyptic number.

It is an amenable number.

65998901 is a deficient number, since it is larger than the sum of its proper divisors (745483).

65998901 is a wasteful number, since it uses less digits than its factorization.

65998901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2251.

The product of its (nonzero) digits is 174960, while the sum is 47.

The square root of 65998901 is about 8123.9707655801. The cubic root of 65998901 is about 404.1217589575.

The spelling of 65998901 in words is "sixty-five million, nine hundred ninety-eight thousand, nine hundred one".