82740347 has 4 divisors (see below), whose sum is σ = 83905776. Its totient is φ = 81574920.

The previous prime is 82740341. The next prime is 82740353. The reversal of 82740347 is 74304728.

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

It is an interprime number because it is at equal distance from previous prime (82740341) and next prime (82740353).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82740347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82740341) 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, 582608 + ... + 582749.

It is an arithmetic number, because the mean of its divisors is an integer number (20976444).

Almost surely, 2^82740347 is an apocalyptic number.

82740347 is a deficient number, since it is larger than the sum of its proper divisors (1165429).

82740347 is a wasteful number, since it uses less digits than its factorization.

82740347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165428.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 82740347 is about 9096.1721069909. The cubic root of 82740347 is about 435.7517226174.

The spelling of 82740347 in words is "eighty-two million, seven hundred forty thousand, three hundred forty-seven".