64755769 has 8 divisors (see below), whose sum is σ = 71438472. Its totient is φ = 58316160.

The previous prime is 64755767. The next prime is 64755793. The reversal of 64755769 is 96755746.

64755769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1075369 + 63680400 = 1037^2 + 7980^2 .

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 64755769 - 2¹ = 64755767 is a prime.

It is a super-2 number, since 2×64755769² = 8386619237562722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64755767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60214 + ... + 61279.

It is an arithmetic number, because the mean of its divisors is an integer number (8929809).

Almost surely, 2^64755769 is an apocalyptic number.

It is an amenable number.

64755769 is a deficient number, since it is larger than the sum of its proper divisors (6682703).

64755769 is a wasteful number, since it uses less digits than its factorization.

64755769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121547.

The product of its digits is 1587600, while the sum is 49.

The square root of 64755769 is about 8047.0969299493. The cubic root of 64755769 is about 401.5683613199.

The spelling of 64755769 in words is "sixty-four million, seven hundred fifty-five thousand, seven hundred sixty-nine".