80724899 has 8 divisors (see below), whose sum is σ = 84696960. Its totient is φ = 76838400.

The previous prime is 80724881. The next prime is 80724907. The reversal of 80724899 is 99842708.

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 80724899 - 2¹² = 80720803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80724829) 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, 19454 + ... + 23235.

It is an arithmetic number, because the mean of its divisors is an integer number (10587120).

Almost surely, 2^80724899 is an apocalyptic number.

80724899 is a deficient number, since it is larger than the sum of its proper divisors (3972061).

80724899 is a wasteful number, since it uses less digits than its factorization.

80724899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42781.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 80724899 is about 8984.7036122512. The cubic root of 80724899 is about 432.1844830348.

The spelling of 80724899 in words is "eighty million, seven hundred twenty-four thousand, eight hundred ninety-nine".