801745980 has 96 divisors (see below), whose sum is σ = 2628218880. Its totient is φ = 178782720.

The previous prime is 801745951. The next prime is 801745991. The reversal of 801745980 is 89547108.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6060 + ... + 40499.

It is an arithmetic number, because the mean of its divisors is an integer number (27377280).

Almost surely, 2^801745980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 801745980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1314109440).

801745980 is an abundant number, since it is smaller than the sum of its proper divisors (1826472900).

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

801745980 is a wasteful number, since it uses less digits than its factorization.

801745980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46619 (or 46617 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 801745980 is about 28315.1192828143. The cubic root of 801745980 is about 928.9926194500.

The spelling of 801745980 in words is "eight hundred one million, seven hundred forty-five thousand, nine hundred eighty".