82021763 has 8 divisors (see below), whose sum is σ = 83149968. Its totient is φ = 80901504.

The previous prime is 82021757. The next prime is 82021783. The reversal of 82021763 is 36712028.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 82021763 - 2⁴ = 82021747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82021783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20495 + ... + 24167.

It is an arithmetic number, because the mean of its divisors is an integer number (10393746).

Almost surely, 2^82021763 is an apocalyptic number.

82021763 is a deficient number, since it is larger than the sum of its proper divisors (1128205).

82021763 is a wasteful number, since it uses less digits than its factorization.

82021763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3973.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 82021763 is about 9056.5867190681. The cubic root of 82021763 is about 434.4865797099.

The spelling of 82021763 in words is "eighty-two million, twenty-one thousand, seven hundred sixty-three".