77856083 has 4 divisors (see below), whose sum is σ = 77899440. Its totient is φ = 77812728.

The previous prime is 77856061. The next prime is 77856109. The reversal of 77856083 is 38065877.

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 77856083 - 2⁶ = 77856019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77856983) 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, 18863 + ... + 22616.

It is an arithmetic number, because the mean of its divisors is an integer number (19474860).

Almost surely, 2^77856083 is an apocalyptic number.

77856083 is a deficient number, since it is larger than the sum of its proper divisors (43357).

77856083 is a wasteful number, since it uses less digits than its factorization.

77856083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43356.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 77856083 is about 8823.6094088530. The cubic root of 77856083 is about 427.0029250952.

The spelling of 77856083 in words is "seventy-seven million, eight hundred fifty-six thousand, eighty-three".