22755649 has 8 divisors (see below), whose sum is σ = 26537600. Its totient is φ = 19504548.

The previous prime is 22755647. The next prime is 22755659. The reversal of 22755649 is 94655722.

It is not a de Polignac number, because 22755649 - 2¹ = 22755647 is a prime.

It is a super-2 number, since 2×22755649² = 1035639122822402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22755647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32829 + ... + 33514.

It is an arithmetic number, because the mean of its divisors is an integer number (3317200).

Almost surely, 2^22755649 is an apocalyptic number.

It is an amenable number.

22755649 is a deficient number, since it is larger than the sum of its proper divisors (3781951).

22755649 is an frugal number, since it uses more digits than its factorization.

22755649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66364 (or 66350 counting only the distinct ones).

The product of its digits is 151200, while the sum is 40.

The square root of 22755649 is about 4770.2881464331. The cubic root of 22755649 is about 283.3760063370.

The spelling of 22755649 in words is "twenty-two million, seven hundred fifty-five thousand, six hundred forty-nine".