82745487 has 18 divisors (see below), whose sum is σ = 131376336. Its totient is φ = 50148120.

The previous prime is 82745473. The next prime is 82745489. The reversal of 82745487 is 78454728.

It is not a de Polignac number, because 82745487 - 2⁶ = 82745423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82745489) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 36903 + ... + 39080.

Almost surely, 2^82745487 is an apocalyptic number.

82745487 is a deficient number, since it is larger than the sum of its proper divisors (48630849).

82745487 is a wasteful number, since it uses less digits than its factorization.

82745487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76011 (or 75997 counting only the distinct ones).

The product of its digits is 501760, while the sum is 45.

The square root of 82745487 is about 9096.4546390338. The cubic root of 82745487 is about 435.7607456940.

It can be divided in two parts, 827454 and 87, that added together give a triangular number (827541 = T₁₂₈₆).

The spelling of 82745487 in words is "eighty-two million, seven hundred forty-five thousand, four hundred eighty-seven".