64511117 has 8 divisors (see below), whose sum is σ = 70582752. Its totient is φ = 58474000.

The previous prime is 64511101. The next prime is 64511129. The reversal of 64511117 is 71111546.

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 64511117 - 2⁴ = 64511101 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 (64511147) 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, 4634 + ... + 12267.

It is an arithmetic number, because the mean of its divisors is an integer number (8822844).

Almost surely, 2^64511117 is an apocalyptic number.

It is an amenable number.

64511117 is a deficient number, since it is larger than the sum of its proper divisors (6071635).

64511117 is a wasteful number, since it uses less digits than its factorization.

64511117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17259.

The product of its digits is 840, while the sum is 26.

The square root of 64511117 is about 8031.8812864733. The cubic root of 64511117 is about 401.0620049517.

The spelling of 64511117 in words is "sixty-four million, five hundred eleven thousand, one hundred seventeen".