82640063 has 8 divisors (see below), whose sum is σ = 94897920. Its totient is φ = 71173080.

The previous prime is 82640021. The next prime is 82640071. The reversal of 82640063 is 36004628.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82640063 - 2¹² = 82635967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82640263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197495 + ... + 197912.

It is an arithmetic number, because the mean of its divisors is an integer number (11862240).

Almost surely, 2^82640063 is an apocalyptic number.

82640063 is a deficient number, since it is larger than the sum of its proper divisors (12257857).

82640063 is a wasteful number, since it uses less digits than its factorization.

82640063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395437.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 82640063 is about 9090.6580069872. The cubic root of 82640063 is about 435.5756030092.

The spelling of 82640063 in words is "eighty-two million, six hundred forty thousand, sixty-three".