82740417 has 4 divisors (see below), whose sum is σ = 110320560. Its totient is φ = 55160276.

The previous prime is 82740403. The next prime is 82740443. The reversal of 82740417 is 71404728.

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 82740417 - 2⁶ = 82740353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82740467) 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, 13790067 + ... + 13790072.

It is an arithmetic number, because the mean of its divisors is an integer number (27580140).

Almost surely, 2^82740417 is an apocalyptic number.

It is an amenable number.

82740417 is a deficient number, since it is larger than the sum of its proper divisors (27580143).

82740417 is a wasteful number, since it uses less digits than its factorization.

82740417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27580142.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 82740417 is about 9096.1759547625. The cubic root of 82740417 is about 435.7518455022.

The spelling of 82740417 in words is "eighty-two million, seven hundred forty thousand, four hundred seventeen".