82077461 has 4 divisors (see below), whose sum is σ = 82174092. Its totient is φ = 81980832.

The previous prime is 82077431. The next prime is 82077467. The reversal of 82077461 is 16477028.

It is a happy number.

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 55965361 + 26112100 = 7481^2 + 5110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82077461 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 (82077467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47030 + ... + 48743.

It is an arithmetic number, because the mean of its divisors is an integer number (20543523).

Almost surely, 2^82077461 is an apocalyptic number.

It is an amenable number.

82077461 is a deficient number, since it is larger than the sum of its proper divisors (96631).

82077461 is an equidigital number, since it uses as much as digits as its factorization.

82077461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96630.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 82077461 is about 9059.6611967556. The cubic root of 82077461 is about 434.5849054750.

The spelling of 82077461 in words is "eighty-two million, seventy-seven thousand, four hundred sixty-one".