82761013 has 4 divisors (see below), whose sum is σ = 83996320. Its totient is φ = 81525708.

The previous prime is 82760999. The next prime is 82761023. The reversal of 82761013 is 31016728.

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 82761013 - 2⁹ = 82760501 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 (82761023) 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, 617553 + ... + 617686.

It is an arithmetic number, because the mean of its divisors is an integer number (20999080).

Almost surely, 2^82761013 is an apocalyptic number.

It is an amenable number.

82761013 is a deficient number, since it is larger than the sum of its proper divisors (1235307).

82761013 is a wasteful number, since it uses less digits than its factorization.

82761013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235306.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 82761013 is about 9097.3080084166. The cubic root of 82761013 is about 435.7879987341.

The spelling of 82761013 in words is "eighty-two million, seven hundred sixty-one thousand, thirteen".