1326406655 has 8 divisors (see below), whose sum is σ = 1819072032. Its totient is φ = 909535968.

The previous prime is 1326406651. The next prime is 1326406667. The reversal of 1326406655 is 5566046231.

It is a happy number.

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 1326406655 - 2² = 1326406651 is a prime.

It is a super-2 number, since 2×1326406655² = 3518709228856578050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326406651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18948632 + ... + 18948701.

It is an arithmetic number, because the mean of its divisors is an integer number (227384004).

Almost surely, 2^1326406655 is an apocalyptic number.

1326406655 is a deficient number, since it is larger than the sum of its proper divisors (492665377).

1326406655 is an equidigital number, since it uses as much as digits as its factorization.

1326406655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37897345.

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 1326406655 is about 36419.8662133732. The cubic root of 1326406655 is about 1098.7331572712.

The spelling of 1326406655 in words is "one billion, three hundred twenty-six million, four hundred six thousand, six hundred fifty-five".