852649666 has 32 divisors (see below), whose sum is σ = 1440964800. Its totient is φ = 375036480.

The previous prime is 852649661. The next prime is 852649717. The reversal of 852649666 is 666946258.

It is a super-2 number, since 2×852649666² = 1454022905859823112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (852649661) 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, 98980 + ... + 107248.

It is an arithmetic number, because the mean of its divisors is an integer number (45030150).

Almost surely, 2^852649666 is an apocalyptic number.

852649666 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

852649666 is a deficient number, since it is larger than the sum of its proper divisors (588315134).

852649666 is a wasteful number, since it uses less digits than its factorization.

852649666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8434.

The product of its digits is 3732480, while the sum is 52.

The square root of 852649666 is about 29200.1655132295. The cubic root of 852649666 is about 948.2515081284.

The spelling of 852649666 in words is "eight hundred fifty-two million, six hundred forty-nine thousand, six hundred sixty-six".