65016191 has 8 divisors (see below), whose sum is σ = 66679200. Its totient is φ = 63374080.

The previous prime is 65016187. The next prime is 65016229. The reversal of 65016191 is 19161056.

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 65016191 - 2² = 65016187 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 (65016121) 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, 1175 + ... + 11463.

It is an arithmetic number, because the mean of its divisors is an integer number (8334900).

Almost surely, 2^65016191 is an apocalyptic number.

65016191 is a deficient number, since it is larger than the sum of its proper divisors (1663009).

65016191 is a wasteful number, since it uses less digits than its factorization.

65016191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10449.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 65016191 is about 8063.2618089704. The cubic root of 65016191 is about 402.1059574826.

The spelling of 65016191 in words is "sixty-five million, sixteen thousand, one hundred ninety-one".