64011813 has 8 divisors (see below), whose sum is σ = 87655968. Its totient is φ = 41521104.

The previous prime is 64011811. The next prime is 64011823. The reversal of 64011813 is 31811046.

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

It is not a de Polignac number, because 64011813 - 2¹ = 64011811 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64011811) 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, 288231 + ... + 288452.

It is an arithmetic number, because the mean of its divisors is an integer number (10956996).

Almost surely, 2^64011813 is an apocalyptic number.

It is an amenable number.

64011813 is a deficient number, since it is larger than the sum of its proper divisors (23644155).

64011813 is a wasteful number, since it uses less digits than its factorization.

64011813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576723.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 64011813 is about 8000.7382784341. The cubic root of 64011813 is about 400.0246089026.

Adding to 64011813 its reverse (31811046), we get a palindrome (95822859).

The spelling of 64011813 in words is "sixty-four million, eleven thousand, eight hundred thirteen".