1210066656 has 24 divisors (see below), whose sum is σ = 3176425224. Its totient is φ = 403355520.

The previous prime is 1210066651. The next prime is 1210066657. The reversal of 1210066656 is 6566600121.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×1210066656² = 2928522623926044672, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210066651) 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, 6302335 + ... + 6302526.

It is an arithmetic number, because the mean of its divisors is an integer number (132351051).

Almost surely, 2^1210066656 is an apocalyptic number.

1210066656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1210066656 is an abundant number, since it is smaller than the sum of its proper divisors (1966358568).

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

1210066656 is a wasteful number, since it uses less digits than its factorization.

1210066656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12604874 (or 12604866 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 1210066656 is about 34786.0123612926. The cubic root of 1210066656 is about 1065.6218035651.

Adding to 1210066656 its reverse (6566600121), we get a palindrome (7776666777).

The spelling of 1210066656 in words is "one billion, two hundred ten million, sixty-six thousand, six hundred fifty-six".