83077857 has 6 divisors (see below), whose sum is σ = 120001362. Its totient is φ = 55385232.

The previous prime is 83077831. The next prime is 83077859. The reversal of 83077857 is 75877038.

It can be written as a sum of positive squares in only one way, i.e., 71216721 + 11861136 = 8439^2 + 3444^2 .

It is not a de Polignac number, because 83077857 - 2¹² = 83073761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83077859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4615428 + ... + 4615445.

It is an arithmetic number, because the mean of its divisors is an integer number (20000227).

Almost surely, 2^83077857 is an apocalyptic number.

It is an amenable number.

83077857 is a deficient number, since it is larger than the sum of its proper divisors (36923505).

83077857 is a wasteful number, since it uses less digits than its factorization.

83077857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9230879 (or 9230876 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The square root of 83077857 is about 9114.7055355617. The cubic root of 83077857 is about 436.3434171858.

It can be divided in two parts, 830 and 77857, that added together give a palindrome (78687).

The spelling of 83077857 in words is "eighty-three million, seventy-seven thousand, eight hundred fifty-seven".