65990366 has 8 divisors (see below), whose sum is σ = 106599864. Its totient is φ = 30457080.

The previous prime is 65990357. The next prime is 65990371. The reversal of 65990366 is 66309956.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1269020 + ... + 1269071.

It is an arithmetic number, because the mean of its divisors is an integer number (13324983).

Almost surely, 2^65990366 is an apocalyptic number.

65990366 is a deficient number, since it is larger than the sum of its proper divisors (40609498).

65990366 is a wasteful number, since it uses less digits than its factorization.

65990366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538106.

The product of its (nonzero) digits is 262440, while the sum is 44.

The square root of 65990366 is about 8123.4454512848. The cubic root of 65990366 is about 404.1043378194.

The spelling of 65990366 in words is "sixty-five million, nine hundred ninety thousand, three hundred sixty-six".