22277661 has 16 divisors (see below), whose sum is σ = 34140288. Its totient is φ = 12657600.

The previous prime is 22277659. The next prime is 22277677. The reversal of 22277661 is 16677222.

It is not a de Polignac number, because 22277661 - 2¹ = 22277659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22277621) 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, 871 + ... + 6731.

It is an arithmetic number, because the mean of its divisors is an integer number (2133768).

Almost surely, 2^22277661 is an apocalyptic number.

22277661 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22277661 is a deficient number, since it is larger than the sum of its proper divisors (11862627).

22277661 is a wasteful number, since it uses less digits than its factorization.

22277661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6052.

The product of its digits is 14112, while the sum is 33.

The square root of 22277661 is about 4719.9217154525. The cubic root of 22277661 is about 281.3778219977.

The spelling of 22277661 in words is "twenty-two million, two hundred seventy-seven thousand, six hundred sixty-one".