22137661 has 24 divisors (see below), whose sum is σ = 28957824. Its totient is φ = 16742880.

The previous prime is 22137649. The next prime is 22137667. The reversal of 22137661 is 16673122.

It is not a de Polignac number, because 22137661 - 2⁵ = 22137629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22137667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13896 + ... + 15406.

It is an arithmetic number, because the mean of its divisors is an integer number (1206576).

Almost surely, 2^22137661 is an apocalyptic number.

It is an amenable number.

22137661 is a deficient number, since it is larger than the sum of its proper divisors (6820163).

22137661 is a wasteful number, since it uses less digits than its factorization.

22137661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561 (or 1554 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 22137661 is about 4705.0675871872. The cubic root of 22137661 is about 280.7871599946.

The spelling of 22137661 in words is "twenty-two million, one hundred thirty-seven thousand, six hundred sixty-one".