64811379 has 8 divisors (see below), whose sum is σ = 86538240. Its totient is φ = 43146056.

The previous prime is 64811377. The next prime is 64811381. The reversal of 64811379 is 97311846.

It is an interprime number because it is at equal distance from previous prime (64811377) and next prime (64811381).

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 64811379 - 2¹ = 64811377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64811377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12867 + ... + 17180.

It is an arithmetic number, because the mean of its divisors is an integer number (10817280).

Almost surely, 2^64811379 is an apocalyptic number.

64811379 is a deficient number, since it is larger than the sum of its proper divisors (21726861).

64811379 is a wasteful number, since it uses less digits than its factorization.

64811379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30769.

The product of its digits is 36288, while the sum is 39.

The square root of 64811379 is about 8050.5514717937. The cubic root of 64811379 is about 401.6832794064.

The spelling of 64811379 in words is "sixty-four million, eight hundred eleven thousand, three hundred seventy-nine".