7982775 has 36 divisors (see below), whose sum is σ = 15146352. Its totient is φ = 4005120.

The previous prime is 7982773. The next prime is 7982783. The reversal of 7982775 is 5772897.

It is not a de Polignac number, because 7982775 - 2¹ = 7982773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a d-powerful number, because it can be written as 7 + 9 + 8⁷ + 2⁵ + 7⁶ + 7⁸ + 5⁵ .

7982775 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7982775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7982773) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2782 + ... + 4868.

It is an arithmetic number, because the mean of its divisors is an integer number (420732).

Almost surely, 2^7982775 is an apocalyptic number.

7982775 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

7982775 is a deficient number, since it is larger than the sum of its proper divisors (7163577).

7982775 is a wasteful number, since it uses less digits than its factorization.

7982775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120 (or 2112 counting only the distinct ones).

The product of its digits is 246960, while the sum is 45.

The square root of 7982775 is about 2825.3805053479. The cubic root of 7982775 is about 199.8563551889.

The spelling of 7982775 in words is "seven million, nine hundred eighty-two thousand, seven hundred seventy-five".