82750079 has 4 divisors (see below), whose sum is σ = 85603560. Its totient is φ = 79896600.

The previous prime is 82750069. The next prime is 82750117. The reversal of 82750079 is 97005728.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82750079 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 (82750009) 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, 1426697 + ... + 1426754.

It is an arithmetic number, because the mean of its divisors is an integer number (21400890).

Almost surely, 2^82750079 is an apocalyptic number.

82750079 is a deficient number, since it is larger than the sum of its proper divisors (2853481).

82750079 is a wasteful number, since it uses less digits than its factorization.

82750079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2853480.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 82750079 is about 9096.7070415618. The cubic root of 82750079 is about 435.7688064612.

The spelling of 82750079 in words is "eighty-two million, seven hundred fifty thousand, seventy-nine".