80835745 has 4 divisors (see below), whose sum is σ = 97002900. Its totient is φ = 64668592.

The previous prime is 80835719. The next prime is 80835749. The reversal of 80835745 is 54753808.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47114496 + 33721249 = 6864^2 + 5807^2 .

It is a cyclic number.

It is not a de Polignac number, because 80835745 - 2⁹ = 80835233 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 80835698 and 80835707.

It is not an unprimeable number, because it can be changed into a prime (80835749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8083570 + ... + 8083579.

It is an arithmetic number, because the mean of its divisors is an integer number (24250725).

Almost surely, 2^80835745 is an apocalyptic number.

It is an amenable number.

80835745 is a deficient number, since it is larger than the sum of its proper divisors (16167155).

80835745 is a wasteful number, since it uses less digits than its factorization.

80835745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16167154.

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 80835745 is about 8990.8700913760. The cubic root of 80835745 is about 432.3822081128.

The spelling of 80835745 in words is "eighty million, eight hundred thirty-five thousand, seven hundred forty-five".