1106623621 has 2 divisors, whose sum is σ = 1106623622. Its totient is φ = 1106623620.

The previous prime is 1106623607. The next prime is 1106623667. The reversal of 1106623621 is 1263266011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1101310596 + 5313025 = 33186^2 + 2305^2 .

It is a cyclic number.

It is not a de Polignac number, because 1106623621 - 2¹¹ = 1106621573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1106623621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1106623681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 553311810 + 553311811.

It is an arithmetic number, because the mean of its divisors is an integer number (553311811).

Almost surely, 2^1106623621 is an apocalyptic number.

It is an amenable number.

1106623621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1106623621 is an equidigital number, since it uses as much as digits as its factorization.

1106623621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1106623621 is about 33265.9528797839. The cubic root of 1106623621 is about 1034.3479197506.

Adding to 1106623621 its reverse (1263266011), we get a palindrome (2369889632).

The spelling of 1106623621 in words is "one billion, one hundred six million, six hundred twenty-three thousand, six hundred twenty-one".