80764740 has 108 divisors (see below), whose sum is σ = 285015276. Its totient is φ = 18458496.

The previous prime is 80764729. The next prime is 80764757. The reversal of 80764740 is 4746708.

It is a happy number.

80764740 is a `hidden beast` number, since 8 + 0 + 7 + 647 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19079424 + 61685316 = 4368^2 + 7854^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 80764695 and 80764704.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4242 + ... + 13398.

Almost surely, 2^80764740 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 80764740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142507638).

80764740 is an abundant number, since it is smaller than the sum of its proper divisors (204250536).

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

80764740 is a wasteful number, since it uses less digits than its factorization.

80764740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9186 (or 9174 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 80764740 is about 8986.9204959207. The cubic root of 80764740 is about 432.2555715105.

The spelling of 80764740 in words is "eighty million, seven hundred sixty-four thousand, seven hundred forty".