83668877 has 8 divisors (see below), whose sum is σ = 87110136. Its totient is φ = 80289792.

The previous prime is 83668873. The next prime is 83668889. The reversal of 83668877 is 77886638.

It can be written as a sum of positive squares in 4 ways, for example, as 62315236 + 21353641 = 7894^2 + 4621^2 .

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 83668877 - 2² = 83668873 is a prime.

It is a super-2 number, since 2×83668877² = 14000961956882258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83668873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12788 + ... + 18189.

It is an arithmetic number, because the mean of its divisors is an integer number (10888767).

Almost surely, 2^83668877 is an apocalyptic number.

It is an amenable number.

83668877 is a deficient number, since it is larger than the sum of its proper divisors (3441259).

83668877 is a wasteful number, since it uses less digits than its factorization.

83668877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31087.

The product of its digits is 2709504, while the sum is 53.

The square root of 83668877 is about 9147.0693120802. The cubic root of 83668877 is about 437.3756960598.

The spelling of 83668877 in words is "eighty-three million, six hundred sixty-eight thousand, eight hundred seventy-seven".