64871016 has 64 divisors (see below), whose sum is σ = 195110400. Its totient is φ = 17558208.

The previous prime is 64871011. The next prime is 64871029. The reversal of 64871016 is 61017846.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (64871011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6970 + ... + 13353.

It is an arithmetic number, because the mean of its divisors is an integer number (3048600).

Almost surely, 2^64871016 is an apocalyptic number.

It is an amenable number.

64871016 is an abundant number, since it is smaller than the sum of its proper divisors (130239384).

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

64871016 is a wasteful number, since it uses less digits than its factorization.

64871016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20358 (or 20354 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 64871016 is about 8054.2545278877. The cubic root of 64871016 is about 401.8064462654.

It can be divided in two parts, 6487 and 1016, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 64871016 in words is "sixty-four million, eight hundred seventy-one thousand, sixteen".