80345956 has 6 divisors (see below), whose sum is σ = 140605430. Its totient is φ = 40172976.

The previous prime is 80345953. The next prime is 80345957. The reversal of 80345956 is 65954308.

It can be written as a sum of positive squares in only one way, i.e., 73376356 + 6969600 = 8566^2 + 2640^2 .

It is not an unprimeable number, because it can be changed into a prime (80345953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10043241 + ... + 10043248.

Almost surely, 2^80345956 is an apocalyptic number.

It is an amenable number.

80345956 is a deficient number, since it is larger than the sum of its proper divisors (60259474).

80345956 is a wasteful number, since it uses less digits than its factorization.

80345956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20086493 (or 20086491 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 80345956 is about 8963.5905752104. The cubic root of 80345956 is about 431.5071611620.

The spelling of 80345956 in words is "eighty million, three hundred forty-five thousand, nine hundred fifty-six".