64949311 has 4 divisors (see below), whose sum is σ = 74227792. Its totient is φ = 55670832.

The previous prime is 64949303. The next prime is 64949317. The reversal of 64949311 is 11394946.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 64949311 - 2³ = 64949303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64949317) 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 3 ways as a sum of consecutive naturals, for example, 4639230 + ... + 4639243.

It is an arithmetic number, because the mean of its divisors is an integer number (18556948).

Almost surely, 2^64949311 is an apocalyptic number.

64949311 is a deficient number, since it is larger than the sum of its proper divisors (9278481).

64949311 is an equidigital number, since it uses as much as digits as its factorization.

64949311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9278480.

The product of its digits is 23328, while the sum is 37.

The square root of 64949311 is about 8059.1135368600. The cubic root of 64949311 is about 401.9680324901.

The spelling of 64949311 in words is "sixty-four million, nine hundred forty-nine thousand, three hundred eleven".