82646773 has 4 divisors (see below), whose sum is σ = 90160128. Its totient is φ = 75133420.

The previous prime is 82646761. The next prime is 82646783. The reversal of 82646773 is 37764628.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82646773 - 2⁹ = 82646261 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 (82646783) 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, 3756661 + ... + 3756682.

It is an arithmetic number, because the mean of its divisors is an integer number (22540032).

Almost surely, 2^82646773 is an apocalyptic number.

It is an amenable number.

82646773 is a deficient number, since it is larger than the sum of its proper divisors (7513355).

82646773 is a wasteful number, since it uses less digits than its factorization.

82646773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7513354.

The product of its digits is 338688, while the sum is 43.

The square root of 82646773 is about 9091.0270596891. The cubic root of 82646773 is about 435.5873916142.

The spelling of 82646773 in words is "eighty-two million, six hundred forty-six thousand, seven hundred seventy-three".