82177963 has 4 divisors (see below), whose sum is σ = 93917680. Its totient is φ = 70438248.

The previous prime is 82177961. The next prime is 82177969. The reversal of 82177963 is 36977128.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 82177963 - 2¹ = 82177961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82177961) 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, 5869848 + ... + 5869861.

It is an arithmetic number, because the mean of its divisors is an integer number (23479420).

Almost surely, 2^82177963 is an apocalyptic number.

82177963 is a deficient number, since it is larger than the sum of its proper divisors (11739717).

82177963 is a wasteful number, since it uses less digits than its factorization.

82177963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11739716.

The product of its digits is 127008, while the sum is 43.

The square root of 82177963 is about 9065.2061752615. The cubic root of 82177963 is about 434.7622129303.

The spelling of 82177963 in words is "eighty-two million, one hundred seventy-seven thousand, nine hundred sixty-three".