64391116 has 6 divisors (see below), whose sum is σ = 112684460. Its totient is φ = 32195556.

The previous prime is 64391111. The next prime is 64391147. The reversal of 64391116 is 61119346.

It is not an unprimeable number, because it can be changed into a prime (64391111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8048886 + ... + 8048893.

Almost surely, 2^64391116 is an apocalyptic number.

It is an amenable number.

64391116 is a deficient number, since it is larger than the sum of its proper divisors (48293344).

64391116 is a wasteful number, since it uses less digits than its factorization.

64391116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16097783 (or 16097781 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 64391116 is about 8024.4075170694. The cubic root of 64391116 is about 400.8131707631.

The spelling of 64391116 in words is "sixty-four million, three hundred ninety-one thousand, one hundred sixteen".