6656466770 has 8 divisors (see below), whose sum is σ = 11981640204. Its totient is φ = 2662586704.

The previous prime is 6656466743. The next prime is 6656466811. The reversal of 6656466770 is 776646566.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6452748241 + 203718529 = 80329^2 + 14273^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×6656466770² = 88617099720228465800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332823329 + ... + 332823348.

Almost surely, 2^6656466770 is an apocalyptic number.

6656466770 is a deficient number, since it is larger than the sum of its proper divisors (5325173434).

6656466770 is a wasteful number, since it uses less digits than its factorization.

6656466770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665646684.

The product of its (nonzero) digits is 7620480, while the sum is 53.

The square root of 6656466770 is about 81587.1728275959. The cubic root of 6656466770 is about 1881.1117208031. Note that the first 3 decimals are identical.

The spelling of 6656466770 in words is "six billion, six hundred fifty-six million, four hundred sixty-six thousand, seven hundred seventy".