82742655 has 64 divisors (see below), whose sum is σ = 148055040. Its totient is φ = 39266304.

The previous prime is 82742651. The next prime is 82742717. The reversal of 82742655 is 55624728.

It is not a de Polignac number, because 82742655 - 2² = 82742651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82742651) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 495382 + ... + 495548.

It is an arithmetic number, because the mean of its divisors is an integer number (2313360).

Almost surely, 2^82742655 is an apocalyptic number.

82742655 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

82742655 is a deficient number, since it is larger than the sum of its proper divisors (65312385).

82742655 is a wasteful number, since it uses less digits than its factorization.

82742655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288.

The product of its digits is 134400, while the sum is 39.

The square root of 82742655 is about 9096.2989726592. The cubic root of 82742655 is about 435.7557742708.

The spelling of 82742655 in words is "eighty-two million, seven hundred forty-two thousand, six hundred fifty-five".