64021109 has 8 divisors (see below), whose sum is σ = 65753952. Its totient is φ = 62299440.

The previous prime is 64021103. The next prime is 64021123. The reversal of 64021109 is 90112046.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 64021109 - 2⁴ = 64021093 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 (64021103) 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, 9539 + ... + 14799.

It is an arithmetic number, because the mean of its divisors is an integer number (8219244).

Almost surely, 2^64021109 is an apocalyptic number.

It is an amenable number.

64021109 is a deficient number, since it is larger than the sum of its proper divisors (1732843).

64021109 is a wasteful number, since it uses less digits than its factorization.

64021109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5587.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 64021109 is about 8001.3192037313. The cubic root of 64021109 is about 400.0439722493.

The spelling of 64021109 in words is "sixty-four million, twenty-one thousand, one hundred nine".