64999946 has 16 divisors (see below), whose sum is σ = 108168480.
Its totient is φ = 29044080.
The previous prime is 64999943. The next prime is 64999981.
64999946 is nontrivially palindromic in base 10.
It is a junction number, because it is equal to n+sod(n) for n = 64999891 and 64999900.
It is not an unprimeable number, because it can be changed into a prime (64999943) 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, 23741 + ... + 26336.
It is an arithmetic number, because the mean of its divisors is an integer number (6760530).
Almost surely, 264999946 is an apocalyptic number.
64999946 is a deficient number, since it is larger than the sum of its proper divisors (43168534).
64999946 is a wasteful number, since it uses less digits than its factorization.
64999946 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 50149.
The product of its digits is 3779136, while the sum is 56.
The square root of 64999946 is about 8062.2543993600.
The cubic root of 64999946 is about 402.0724645157.
The spelling of 64999946 in words is "sixty-four million, nine hundred ninety-nine thousand, nine hundred forty-six".