82690277 has 4 divisors (see below), whose sum is σ = 82752396. Its totient is φ = 82628160.

The previous prime is 82690253. The next prime is 82690291. The reversal of 82690277 is 77209628.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29604481 + 53085796 = 5441^2 + 7286^2 .

It is a cyclic number.

It is not a de Polignac number, because 82690277 - 2²⁴ = 65913061 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 (82690207) 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, 29018 + ... + 31739.

It is an arithmetic number, because the mean of its divisors is an integer number (20688099).

Almost surely, 2^82690277 is an apocalyptic number.

It is an amenable number.

82690277 is a deficient number, since it is larger than the sum of its proper divisors (62119).

82690277 is a wasteful number, since it uses less digits than its factorization.

82690277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62118.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 82690277 is about 9093.4194338544. The cubic root of 82690277 is about 435.6638070596.

The spelling of 82690277 in words is "eighty-two million, six hundred ninety thousand, two hundred seventy-seven".