80651760 has 160 divisors (see below), whose sum is σ = 290790912. Its totient is φ = 18109440.

The previous prime is 80651729. The next prime is 80651771. The reversal of 80651760 is 6715608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102087 + ... + 102873.

Almost surely, 2^80651760 is an apocalyptic number.

80651760 is a gapful number since it is divisible by the number (80) 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 80651760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145395456).

80651760 is an abundant number, since it is smaller than the sum of its proper divisors (210139152).

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

80651760 is a wasteful number, since it uses less digits than its factorization.

80651760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871 (or 865 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 80651760 is about 8980.6324944293. The cubic root of 80651760 is about 432.0539198815.

The spelling of 80651760 in words is "eighty million, six hundred fifty-one thousand, seven hundred sixty".