80780933 has 2 divisors, whose sum is σ = 80780934. Its totient is φ = 80780932.

The previous prime is 80780927. The next prime is 80780981. The reversal of 80780933 is 33908708.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51868804 + 28912129 = 7202^2 + 5377^2 .

It is a cyclic number.

It is not a de Polignac number, because 80780933 - 2⁸ = 80780677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80780993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40390466 + 40390467.

It is an arithmetic number, because the mean of its divisors is an integer number (40390467).

Almost surely, 2^80780933 is an apocalyptic number.

It is an amenable number.

80780933 is a deficient number, since it is larger than the sum of its proper divisors (1).

80780933 is an equidigital number, since it uses as much as digits as its factorization.

80780933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 80780933 is about 8987.8213711667. The cubic root of 80780933 is about 432.2844580714.

The spelling of 80780933 in words is "eighty million, seven hundred eighty thousand, nine hundred thirty-three".