64511016 has 32 divisors (see below), whose sum is σ = 161935200. Its totient is φ = 21416000.

The previous prime is 64511011. The next prime is 64511033. The reversal of 64511016 is 61011546.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (64511011) 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, 670 + ... + 11378.

It is an arithmetic number, because the mean of its divisors is an integer number (5060475).

Almost surely, 2^64511016 is an apocalyptic number.

It is an amenable number.

64511016 is an abundant number, since it is smaller than the sum of its proper divisors (97424184).

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

64511016 is a wasteful number, since it uses less digits than its factorization.

64511016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10969 (or 10965 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 64511016 is about 8031.8749990273. The cubic root of 64511016 is about 401.0617956478.

The spelling of 64511016 in words is "sixty-four million, five hundred eleven thousand, sixteen".