806821276 has 12 divisors (see below), whose sum is σ = 1412136208. Its totient is φ = 403353792.

The previous prime is 806821261. The next prime is 806821277. The reversal of 806821276 is 672128608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806821277) 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, 47380 + ... + 62116.

Almost surely, 2^806821276 is an apocalyptic number.

It is an amenable number.

806821276 is a deficient number, since it is larger than the sum of its proper divisors (605314932).

806821276 is a wasteful number, since it uses less digits than its factorization.

806821276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28428 (or 28426 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 806821276 is about 28404.5995571140. The cubic root of 806821276 is about 930.9487662184.

The spelling of 806821276 in words is "eight hundred six million, eight hundred twenty-one thousand, two hundred seventy-six".