806870311780 has 48 divisors (see below), whose sum is σ = 1828726797744. Its totient is φ = 297275051520.

The previous prime is 806870311739. The next prime is 806870311783. The reversal of 806870311780 is 87113078608.

It can be written as a sum of positive squares in 8 ways, for example, as 1403551296 + 805466760484 = 37464^2 + 897478^2 .

It is not an unprimeable number, because it can be changed into a prime (806870311783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3246027 + ... + 3485746.

It is an arithmetic number, because the mean of its divisors is an integer number (38098474953).

Almost surely, 2^806870311780 is an apocalyptic number.

It is an amenable number.

806870311780 is an abundant number, since it is smaller than the sum of its proper divisors (1021856485964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

806870311780 is a wasteful number, since it uses less digits than its factorization.

806870311780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6732256 (or 6732254 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 49.

The spelling of 806870311780 in words is "eight hundred six billion, eight hundred seventy million, three hundred eleven thousand, seven hundred eighty".