80674537 has 4 divisors (see below), whose sum is σ = 85420116. Its totient is φ = 75928960.

The previous prime is 80674519. The next prime is 80674543. The reversal of 80674537 is 73547608.

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 27836176 + 52838361 = 5276^2 + 7269^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80674537 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 Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80674537.

It is not an unprimeable number, because it can be changed into a prime (80674567) 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, 2372764 + ... + 2372797.

It is an arithmetic number, because the mean of its divisors is an integer number (21355029).

Almost surely, 2^80674537 is an apocalyptic number.

It is an amenable number.

80674537 is a deficient number, since it is larger than the sum of its proper divisors (4745579).

80674537 is a wasteful number, since it uses less digits than its factorization.

80674537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4745578.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 80674537 is about 8981.9005227179. The cubic root of 80674537 is about 432.0945884129.

The spelling of 80674537 in words is "eighty million, six hundred seventy-four thousand, five hundred thirty-seven".