82945477 has 4 divisors (see below), whose sum is σ = 84510540. Its totient is φ = 81380416.

The previous prime is 82945427. The next prime is 82945483. The reversal of 82945477 is 77454928.

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

It can be written as a sum of positive squares in 2 ways, for example, as 72743841 + 10201636 = 8529^2 + 3194^2 .

It is a cyclic number.

It is not a de Polignac number, because 82945477 - 2⁷ = 82945349 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 (82945427) 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, 782452 + ... + 782557.

It is an arithmetic number, because the mean of its divisors is an integer number (21127635).

Almost surely, 2^82945477 is an apocalyptic number.

It is an amenable number.

82945477 is a deficient number, since it is larger than the sum of its proper divisors (1565063).

82945477 is a wasteful number, since it uses less digits than its factorization.

82945477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565062.

The product of its digits is 564480, while the sum is 46.

The square root of 82945477 is about 9107.4407491896. The cubic root of 82945477 is about 436.1115308900. Note that the first 3 decimals are identical.

The spelling of 82945477 in words is "eighty-two million, nine hundred forty-five thousand, four hundred seventy-seven".