80779033 has 4 divisors (see below), whose sum is σ = 81225508. Its totient is φ = 80332560.

The previous prime is 80779031. The next prime is 80779037. The reversal of 80779033 is 33097708.

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 34715664 + 46063369 = 5892^2 + 6787^2 .

It is a cyclic number.

It is not a de Polignac number, because 80779033 - 2¹ = 80779031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80778983 and 80779001.

It is not an unprimeable number, because it can be changed into a prime (80779031) 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, 222966 + ... + 223327.

It is an arithmetic number, because the mean of its divisors is an integer number (20306377).

Almost surely, 2^80779033 is an apocalyptic number.

It is an amenable number.

80779033 is a deficient number, since it is larger than the sum of its proper divisors (446475).

80779033 is a wasteful number, since it uses less digits than its factorization.

80779033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446474.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 80779033 is about 8987.7156719603. The cubic root of 80779033 is about 432.2810688768.

The spelling of 80779033 in words is "eighty million, seven hundred seventy-nine thousand, thirty-three".