22370661 has 10 divisors (see below), whose sum is σ = 33418022. Its totient is φ = 14913720.

The previous prime is 22370641. The next prime is 22370671. The reversal of 22370661 is 16607322.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13549761 + 8820900 = 3681^2 + 2970^2 .

It is not a de Polignac number, because 22370661 - 2⁹ = 22370149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22370641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 138010 + ... + 138171.

Almost surely, 2^22370661 is an apocalyptic number.

It is an amenable number.

22370661 is a deficient number, since it is larger than the sum of its proper divisors (11047361).

22370661 is an equidigital number, since it uses as much as digits as its factorization.

22370661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276193 (or 276184 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 22370661 is about 4729.7633133171. The cubic root of 22370661 is about 281.7688236675.

Adding to 22370661 its reverse (16607322), we get a palindrome (38977983).

The spelling of 22370661 in words is "twenty-two million, three hundred seventy thousand, six hundred sixty-one".