16390065 has 32 divisors (see below), whose sum is σ = 27878400. Its totient is φ = 8199360.

The previous prime is 16390063. The next prime is 16390067. The reversal of 16390065 is 56009361.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16390063) and next prime (16390067).

It is not a de Polignac number, because 16390065 - 2¹ = 16390063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16390061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37116 + ... + 37554.

It is an arithmetic number, because the mean of its divisors is an integer number (871200).

Almost surely, 2^16390065 is an apocalyptic number.

16390065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16390065 is a deficient number, since it is larger than the sum of its proper divisors (11488335).

16390065 is a wasteful number, since it uses less digits than its factorization.

16390065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 16390065 is about 4048.4645237423. The cubic root of 16390065 is about 254.0155042513.

The spelling of 16390065 in words is "sixteen million, three hundred ninety thousand, sixty-five".