64650769 has 8 divisors (see below), whose sum is σ = 67559040. Its totient is φ = 61750656.

The previous prime is 64650767. The next prime is 64650793. The reversal of 64650769 is 96705646.

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 64650769 - 2¹ = 64650767 is a prime.

It is a super-2 number, since 2×64650769² = 8359443864582722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64650763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18817 + ... + 21985.

It is an arithmetic number, because the mean of its divisors is an integer number (8444880).

Almost surely, 2^64650769 is an apocalyptic number.

It is an amenable number.

64650769 is a deficient number, since it is larger than the sum of its proper divisors (2908271).

64650769 is a wasteful number, since it uses less digits than its factorization.

64650769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4079.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 64650769 is about 8040.5701912240. The cubic root of 64650769 is about 401.3511992619.

It can be divided in two parts, 646 and 50769, that added together give a palindrome (51415).

The spelling of 64650769 in words is "sixty-four million, six hundred fifty thousand, seven hundred sixty-nine".