82379765 has 8 divisors (see below), whose sum is σ = 106460088. Its totient is φ = 60834240.

The previous prime is 82379747. The next prime is 82379771. The reversal of 82379765 is 56797328.

It can be written as a sum of positive squares in 4 ways, for example, as 4251844 + 78127921 = 2062^2 + 8839^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82379765 - 2⁸ = 82379509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 633626 + ... + 633755.

It is an arithmetic number, because the mean of its divisors is an integer number (13307511).

Almost surely, 2^82379765 is an apocalyptic number.

It is an amenable number.

82379765 is a deficient number, since it is larger than the sum of its proper divisors (24080323).

82379765 is a wasteful number, since it uses less digits than its factorization.

82379765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267399.

The product of its digits is 635040, while the sum is 47.

The square root of 82379765 is about 9076.3299300984. The cubic root of 82379765 is about 435.1177996023.

The spelling of 82379765 in words is "eighty-two million, three hundred seventy-nine thousand, seven hundred sixty-five".