82979765 has 8 divisors (see below), whose sum is σ = 108628128. Its totient is φ = 60348880.

The previous prime is 82979731. The next prime is 82979797. The reversal of 82979765 is 56797928.

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

It is a de Polignac number, because none of the positive numbers 2^k-82979765 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, 754307 + ... + 754416.

It is an arithmetic number, because the mean of its divisors is an integer number (13578516).

Almost surely, 2^82979765 is an apocalyptic number.

It is an amenable number.

82979765 is a deficient number, since it is larger than the sum of its proper divisors (25648363).

82979765 is a wasteful number, since it uses less digits than its factorization.

82979765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508739.

The product of its digits is 1905120, while the sum is 53.

The square root of 82979765 is about 9109.3229715495. The cubic root of 82979765 is about 436.1716158708.

The spelling of 82979765 in words is "eighty-two million, nine hundred seventy-nine thousand, seven hundred sixty-five".