2064917565 has 24 divisors (see below), whose sum is σ = 3612649248. Its totient is φ = 1090994400.

The previous prime is 2064917557. The next prime is 2064917573. The reversal of 2064917565 is 5657194602.

2064917565 is a `hidden beast` number, since 20 + 64 + 9 + 1 + 7 + 565 = 666.

It is an interprime number because it is at equal distance from previous prime (2064917557) and next prime (2064917573).

It is not a de Polignac number, because 2064917565 - 2³ = 2064917557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2064917565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209611 + ... + 219240.

It is an arithmetic number, because the mean of its divisors is an integer number (150527052).

Almost surely, 2^2064917565 is an apocalyptic number.

It is an amenable number.

2064917565 is a deficient number, since it is larger than the sum of its proper divisors (1547731683).

2064917565 is a wasteful number, since it uses less digits than its factorization.

2064917565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428969 (or 428966 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 2064917565 is about 45441.3640310235. The cubic root of 2064917565 is about 1273.4079968570.

The spelling of 2064917565 in words is "two billion, sixty-four million, nine hundred seventeen thousand, five hundred sixty-five".