646362065 has 16 divisors (see below), whose sum is σ = 808502592. Its totient is φ = 495595584.

The previous prime is 646362053. The next prime is 646362109. The reversal of 646362065 is 560263646.

646362065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 646362065 - 2¹⁰ = 646361041 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13679 + ... + 38468.

It is an arithmetic number, because the mean of its divisors is an integer number (50531412).

Almost surely, 2^646362065 is an apocalyptic number.

It is an amenable number.

646362065 is a deficient number, since it is larger than the sum of its proper divisors (162140527).

646362065 is a wasteful number, since it uses less digits than its factorization.

646362065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52256.

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 646362065 is about 25423.6516849960. The cubic root of 646362065 is about 864.6200186547.

The spelling of 646362065 in words is "six hundred forty-six million, three hundred sixty-two thousand, sixty-five".