64079765 has 12 divisors (see below), whose sum is σ = 78135564. Its totient is φ = 50440896.

The previous prime is 64079747. The next prime is 64079773. The reversal of 64079765 is 56797046.

It can be written as a sum of positive squares in 2 ways, for example, as 29669809 + 34409956 = 5447^2 + 5866^2 .

It is not a de Polignac number, because 64079765 - 2¹⁰ = 64078741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152726 + ... + 153144.

It is an arithmetic number, because the mean of its divisors is an integer number (6511297).

Almost surely, 2^64079765 is an apocalyptic number.

It is an amenable number.

64079765 is a deficient number, since it is larger than the sum of its proper divisors (14055799).

64079765 is an frugal number, since it uses more digits than its factorization.

64079765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 44.

The square root of 64079765 is about 8004.9837601334. The cubic root of 64079765 is about 400.1661080940.

The spelling of 64079765 in words is "sixty-four million, seventy-nine thousand, seven hundred sixty-five".