80197477 has 2 divisors, whose sum is σ = 80197478. Its totient is φ = 80197476.

The previous prime is 80197457. The next prime is 80197501. The reversal of 80197477 is 77479108.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48455521 + 31741956 = 6961^2 + 5634^2 .

It is a cyclic number.

It is not a de Polignac number, because 80197477 - 2⁷ = 80197349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80197457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40098738 + 40098739.

It is an arithmetic number, because the mean of its divisors is an integer number (40098739).

Almost surely, 2^80197477 is an apocalyptic number.

It is an amenable number.

80197477 is a deficient number, since it is larger than the sum of its proper divisors (1).

80197477 is an equidigital number, since it uses as much as digits as its factorization.

80197477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784, while the sum is 43.

The square root of 80197477 is about 8955.3044057698. The cubic root of 80197477 is about 431.2411894300.

The spelling of 80197477 in words is "eighty million, one hundred ninety-seven thousand, four hundred seventy-seven".