80780807 has 4 divisors (see below), whose sum is σ = 84293040. Its totient is φ = 77268576.

The previous prime is 80780803. The next prime is 80780813. The reversal of 80780807 is 70808708.

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

It is a cyclic number.

It is not a de Polignac number, because 80780807 - 2² = 80780803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80780803) 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, 1756082 + ... + 1756127.

It is an arithmetic number, because the mean of its divisors is an integer number (21073260).

Almost surely, 2^80780807 is an apocalyptic number.

80780807 is a deficient number, since it is larger than the sum of its proper divisors (3512233).

80780807 is a wasteful number, since it uses less digits than its factorization.

80780807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3512232.

The product of its (nonzero) digits is 25088, while the sum is 38.

The square root of 80780807 is about 8987.8143616788. The cubic root of 80780807 is about 432.2842333159.

The spelling of 80780807 in words is "eighty million, seven hundred eighty thousand, eight hundred seven".