77780083 has 8 divisors (see below), whose sum is σ = 82851552. Its totient is φ = 72763776.

The previous prime is 77780081. The next prime is 77780093. The reversal of 77780083 is 38008777.

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 77780083 - 2¹ = 77780081 is a prime.

It is a super-2 number, since 2×77780083² = 12099482622973778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77780081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10860 + ... + 16537.

It is an arithmetic number, because the mean of its divisors is an integer number (10356444).

Almost surely, 2^77780083 is an apocalyptic number.

77780083 is a deficient number, since it is larger than the sum of its proper divisors (5071469).

77780083 is a wasteful number, since it uses less digits than its factorization.

77780083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27581.

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 77780083 is about 8819.3017297289. The cubic root of 77780083 is about 426.8639387916.

The spelling of 77780083 in words is "seventy-seven million, seven hundred eighty thousand, eighty-three".