2237623661 has 24 divisors (see below), whose sum is σ = 2806907544. Its totient is φ = 1768072320.

The previous prime is 2237623651. The next prime is 2237623669. The reversal of 2237623661 is 1663267322.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 173738761 + 2063884900 = 13181^2 + 45430^2 .

It is not a de Polignac number, because 2237623661 - 2¹⁴ = 2237607277 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2237623669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 597551 + ... + 601283.

It is an arithmetic number, because the mean of its divisors is an integer number (116954481).

Almost surely, 2^2237623661 is an apocalyptic number.

It is an amenable number.

2237623661 is a deficient number, since it is larger than the sum of its proper divisors (569283883).

2237623661 is a wasteful number, since it uses less digits than its factorization.

2237623661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4701 (or 4694 counting only the distinct ones).

The product of its digits is 108864, while the sum is 38.

The square root of 2237623661 is about 47303.5269403879. The cubic root of 2237623661 is about 1307.9636721215.

The spelling of 2237623661 in words is "two billion, two hundred thirty-seven million, six hundred twenty-three thousand, six hundred sixty-one".