64409811 has 8 divisors (see below), whose sum is σ = 87974544. Its totient is φ = 41892480.

The previous prime is 64409801. The next prime is 64409819. The reversal of 64409811 is 11890446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64409811 - 2⁶ = 64409747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64409819) 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, 261706 + ... + 261951.

It is an arithmetic number, because the mean of its divisors is an integer number (10996818).

Almost surely, 2^64409811 is an apocalyptic number.

64409811 is a deficient number, since it is larger than the sum of its proper divisors (23564733).

64409811 is a wasteful number, since it uses less digits than its factorization.

64409811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523701.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 64409811 is about 8025.5723160408. The cubic root of 64409811 is about 400.8519570513.

The spelling of 64409811 in words is "sixty-four million, four hundred nine thousand, eight hundred eleven".