82761673 has 4 divisors (see below), whose sum is σ = 84323268. Its totient is φ = 81200080.

The previous prime is 82761667. The next prime is 82761677. The reversal of 82761673 is 37616728.

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 72795024 + 9966649 = 8532^2 + 3157^2 .

It is a cyclic number.

It is not a de Polignac number, because 82761673 - 2¹³ = 82753481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82761677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 780718 + ... + 780823.

It is an arithmetic number, because the mean of its divisors is an integer number (21080817).

Almost surely, 2^82761673 is an apocalyptic number.

It is an amenable number.

82761673 is a deficient number, since it is larger than the sum of its proper divisors (1561595).

82761673 is a wasteful number, since it uses less digits than its factorization.

82761673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561594.

The product of its digits is 84672, while the sum is 40.

The square root of 82761673 is about 9097.3442828113. The cubic root of 82761673 is about 435.7891571673.

It can be divided in two parts, 827 and 61673, that added together give a square (62500 = 250²).

The spelling of 82761673 in words is "eighty-two million, seven hundred sixty-one thousand, six hundred seventy-three".