1206166655 has 8 divisors (see below), whose sum is σ = 1452904992. Its totient is φ = 961263328.

The previous prime is 1206166639. The next prime is 1206166669. The reversal of 1206166655 is 5566616021.

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

It is a cyclic number.

It is not a de Polignac number, because 1206166655 - 2⁴ = 1206166639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457304 + ... + 459933.

It is an arithmetic number, because the mean of its divisors is an integer number (181613124).

Almost surely, 2^1206166655 is an apocalyptic number.

1206166655 is a deficient number, since it is larger than the sum of its proper divisors (246738337).

1206166655 is an equidigital number, since it uses as much as digits as its factorization.

1206166655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917505.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 1206166655 is about 34729.9100920230. The cubic root of 1206166655 is about 1064.4757512959.

The spelling of 1206166655 in words is "one billion, two hundred six million, one hundred sixty-six thousand, six hundred fifty-five".