806870777 has 4 divisors (see below), whose sum is σ = 849337680. Its totient is φ = 764403876.

The previous prime is 806870731. The next prime is 806870839. The reversal of 806870777 is 777078608.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 806870777 - 2¹⁸ = 806608633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (806870717) 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, 21233423 + ... + 21233460.

It is an arithmetic number, because the mean of its divisors is an integer number (212334420).

Almost surely, 2^806870777 is an apocalyptic number.

It is an amenable number.

806870777 is a deficient number, since it is larger than the sum of its proper divisors (42466903).

806870777 is a wasteful number, since it uses less digits than its factorization.

806870777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42466902.

The product of its (nonzero) digits is 921984, while the sum is 50.

The square root of 806870777 is about 28405.4708991067. The cubic root of 806870777 is about 930.9678046986.

The spelling of 806870777 in words is "eight hundred six million, eight hundred seventy thousand, seven hundred seventy-seven".