80209061 has 4 divisors (see below), whose sum is σ = 82074432. Its totient is φ = 78343692.

The previous prime is 80209039. The next prime is 80209069. The reversal of 80209061 is 16090208.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80209061 is a prime.

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 80209061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80209069) 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, 932621 + ... + 932706.

It is an arithmetic number, because the mean of its divisors is an integer number (20518608).

Almost surely, 2^80209061 is an apocalyptic number.

It is an amenable number.

80209061 is a deficient number, since it is larger than the sum of its proper divisors (1865371).

80209061 is a wasteful number, since it uses less digits than its factorization.

80209061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865370.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 80209061 is about 8955.9511499338. The cubic root of 80209061 is about 431.2619517517.

Adding to 80209061 its reverse (16090208), we get a palindrome (96299269).

The spelling of 80209061 in words is "eighty million, two hundred nine thousand, sixty-one".