64006869 has 4 divisors (see below), whose sum is σ = 85342496. Its totient is φ = 42671244.

The previous prime is 64006867. The next prime is 64006879. The reversal of 64006869 is 96860046.

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 64006869 - 2¹ = 64006867 is a prime.

It is a super-2 number, since 2×64006869² = 8193758558366322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64006867) 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, 10667809 + ... + 10667814.

It is an arithmetic number, because the mean of its divisors is an integer number (21335624).

Almost surely, 2^64006869 is an apocalyptic number.

It is an amenable number.

64006869 is a deficient number, since it is larger than the sum of its proper divisors (21335627).

64006869 is a wasteful number, since it uses less digits than its factorization.

64006869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21335626.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 64006869 is about 8000.4293009813. The cubic root of 64006869 is about 400.0143099047.

The spelling of 64006869 in words is "sixty-four million, six thousand, eight hundred sixty-nine".