64951016 has 48 divisors (see below), whose sum is σ = 139384140. Its totient is φ = 28200960.

The previous prime is 64951009. The next prime is 64951087. The reversal of 64951016 is 61015946.

It can be written as a sum of positive squares in 6 ways, for example, as 42954916 + 21996100 = 6554^2 + 4690^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28976 + ... + 31136.

Almost surely, 2^64951016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64951016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69692070).

64951016 is an abundant number, since it is smaller than the sum of its proper divisors (74433124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64951016 is a wasteful number, since it uses less digits than its factorization.

64951016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214 (or 2193 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 64951016 is about 8059.2193170307. The cubic root of 64951016 is about 401.9715498459.

The spelling of 64951016 in words is "sixty-four million, nine hundred fifty-one thousand, sixteen".