64011693 has 4 divisors (see below), whose sum is σ = 85348928. Its totient is φ = 42674460.

The previous prime is 64011643. The next prime is 64011707. The reversal of 64011693 is 39611046.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 64011693 - 2¹⁸ = 63749549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64011693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64011643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10668613 + ... + 10668618.

It is an arithmetic number, because the mean of its divisors is an integer number (21337232).

Almost surely, 2^64011693 is an apocalyptic number.

It is an amenable number.

64011693 is a deficient number, since it is larger than the sum of its proper divisors (21337235).

64011693 is a wasteful number, since it uses less digits than its factorization.

64011693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21337234.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 64011693 is about 8000.7307791226. The cubic root of 64011693 is about 400.0243589332.

The spelling of 64011693 in words is "sixty-four million, eleven thousand, six hundred ninety-three".