64083817 has 6 divisors (see below), whose sum is σ = 74546538. Its totient is φ = 54928944.

The previous prime is 64083809. The next prime is 64083821. The reversal of 64083817 is 71838046.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 60590656 + 3493161 = 7784^2 + 1869^2 .

It is not a de Polignac number, because 64083817 - 2³ = 64083809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64083017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 653868 + ... + 653965.

It is an arithmetic number, because the mean of its divisors is an integer number (12424423).

Almost surely, 2^64083817 is an apocalyptic number.

It is an amenable number.

64083817 is a deficient number, since it is larger than the sum of its proper divisors (10462721).

64083817 is a wasteful number, since it uses less digits than its factorization.

64083817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307847 (or 1307840 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 64083817 is about 8005.2368484636. The cubic root of 64083817 is about 400.1745425761.

The spelling of 64083817 in words is "sixty-four million, eighty-three thousand, eight hundred seventeen".