82776477 has 16 divisors (see below), whose sum is σ = 126472320. Its totient is φ = 47174592.

The previous prime is 82776457. The next prime is 82776487. The reversal of 82776477 is 77467728.

It is not a de Polignac number, because 82776477 - 2¹⁶ = 82710941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82776457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3103 + ... + 13235.

It is an arithmetic number, because the mean of its divisors is an integer number (7904520).

Almost surely, 2^82776477 is an apocalyptic number.

It is an amenable number.

82776477 is a deficient number, since it is larger than the sum of its proper divisors (43695843).

82776477 is a wasteful number, since it uses less digits than its factorization.

82776477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10532.

The product of its digits is 921984, while the sum is 48.

The square root of 82776477 is about 9098.1578904743. The cubic root of 82776477 is about 435.8151395567.

The spelling of 82776477 in words is "eighty-two million, seven hundred seventy-six thousand, four hundred seventy-seven".