82776403 has 2 divisors, whose sum is σ = 82776404. Its totient is φ = 82776402.

The previous prime is 82776373. The next prime is 82776431. The reversal of 82776403 is 30467728.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82776403 - 2²¹ = 80679251 is a prime.

It is not a weakly prime, because it can be changed into another prime (82776493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41388201 + 41388202.

It is an arithmetic number, because the mean of its divisors is an integer number (41388202).

Almost surely, 2^82776403 is an apocalyptic number.

82776403 is a deficient number, since it is larger than the sum of its proper divisors (1).

82776403 is an equidigital number, since it uses as much as digits as its factorization.

82776403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 82776403 is about 9098.1538237161. The cubic root of 82776403 is about 435.8150096876.

The spelling of 82776403 in words is "eighty-two million, seven hundred seventy-six thousand, four hundred three".