802857666 has 32 divisors (see below), whose sum is σ = 1766032128. Its totient is φ = 241776000.

The previous prime is 802857617. The next prime is 802857667. The reversal of 802857666 is 666758208.

It is not an unprimeable number, because it can be changed into a prime (802857667) 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, 105835 + ... + 113166.

It is an arithmetic number, because the mean of its divisors is an integer number (55188504).

Almost surely, 2^802857666 is an apocalyptic number.

802857666 is an abundant number, since it is smaller than the sum of its proper divisors (963174462).

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

802857666 is a wasteful number, since it uses less digits than its factorization.

802857666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219066.

The product of its (nonzero) digits is 967680, while the sum is 48.

The square root of 802857666 is about 28334.7430904182. The cubic root of 802857666 is about 929.4217957529.

The spelling of 802857666 in words is "eight hundred two million, eight hundred fifty-seven thousand, six hundred sixty-six".