80546405 has 8 divisors (see below), whose sum is σ = 97147512. Its totient is φ = 64109248.

The previous prime is 80546393. The next prime is 80546407. The reversal of 80546405 is 50464508.

It can be written as a sum of positive squares in 4 ways, for example, as 41396356 + 39150049 = 6434^2 + 6257^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80546405 - 2⁶ = 80546341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80546407) 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, 39902 + ... + 41871.

It is an arithmetic number, because the mean of its divisors is an integer number (12143439).

Almost surely, 2^80546405 is an apocalyptic number.

It is an amenable number.

80546405 is a deficient number, since it is larger than the sum of its proper divisors (16601107).

80546405 is a wasteful number, since it uses less digits than its factorization.

80546405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81975.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 80546405 is about 8974.7648994277. The cubic root of 80546405 is about 431.8657079295.

The spelling of 80546405 in words is "eighty million, five hundred forty-six thousand, four hundred five".