80564740 has 24 divisors (see below), whose sum is σ = 169428672. Its totient is φ = 32179680.

The previous prime is 80564711. The next prime is 80564741. The reversal of 80564740 is 4746508.

It is a junction number, because it is equal to n+sod(n) for n = 80564696 and 80564705.

It is not an unprimeable number, because it can be changed into a prime (80564741) 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, 13737 + ... + 18703.

It is an arithmetic number, because the mean of its divisors is an integer number (7059528).

Almost surely, 2^80564740 is an apocalyptic number.

It is an amenable number.

80564740 is an abundant number, since it is smaller than the sum of its proper divisors (88863932).

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

80564740 is a wasteful number, since it uses less digits than its factorization.

80564740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5787 (or 5785 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 80564740 is about 8975.7863165296. The cubic root of 80564740 is about 431.8984743702.

The spelling of 80564740 in words is "eighty million, five hundred sixty-four thousand, seven hundred forty".