2261661622 has 32 divisors (see below), whose sum is σ = 3881986560. Its totient is φ = 978193920.

The previous prime is 2261661617. The next prime is 2261661629.

2261661622 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×2261661622² = 10230226584855341768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261661629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86079 + ... + 109237.

It is an arithmetic number, because the mean of its divisors is an integer number (121312080).

Almost surely, 2^2261661622 is an apocalyptic number.

2261661622 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2261661622 is a deficient number, since it is larger than the sum of its proper divisors (1620324938).

2261661622 is a wasteful number, since it uses less digits than its factorization.

2261661622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23388.

The product of its digits is 20736, while the sum is 34.

The square root of 2261661622 is about 47556.9303256634. The cubic root of 2261661622 is about 1312.6306561027.

The spelling of 2261661622 in words is "two billion, two hundred sixty-one million, six hundred sixty-one thousand, six hundred twenty-two".