66311016 has 32 divisors (see below), whose sum is σ = 175530240. Its totient is φ = 20803328.

The previous prime is 66310997. The next prime is 66311017. The reversal of 66311016 is 61011366.

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 (66311017) 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, 80856 + ... + 81671.

It is an arithmetic number, because the mean of its divisors is an integer number (5485320).

Almost surely, 2^66311016 is an apocalyptic number.

It is an amenable number.

66311016 is an abundant number, since it is smaller than the sum of its proper divisors (109219224).

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

66311016 is a wasteful number, since it uses less digits than its factorization.

66311016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162553 (or 162549 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 66311016 is about 8143.1576185163. The cubic root of 66311016 is about 404.7578006232.

The spelling of 66311016 in words is "sixty-six million, three hundred eleven thousand, sixteen".