80618664 has 64 divisors (see below), whose sum is σ = 231229440. Its totient is φ = 22944960.

The previous prime is 80618663. The next prime is 80618683. The reversal of 80618664 is 46681608.

It is a super-3 number, since 3×80618664³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (80618663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51477 + ... + 53019.

It is an arithmetic number, because the mean of its divisors is an integer number (3612960).

Almost surely, 2^80618664 is an apocalyptic number.

80618664 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80618664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115614720).

80618664 is an abundant number, since it is smaller than the sum of its proper divisors (150610776).

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

80618664 is a wasteful number, since it uses less digits than its factorization.

80618664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870 (or 1866 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 80618664 is about 8978.7896734471. The cubic root of 80618664 is about 431.9948130379.

The spelling of 80618664 in words is "eighty million, six hundred eighteen thousand, six hundred sixty-four".