22645660 has 24 divisors (see below), whose sum is σ = 47735856. Its totient is φ = 9024000.

The previous prime is 22645657. The next prime is 22645661. The reversal of 22645660 is 6654622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22645661) 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 7 ways as a sum of consecutive naturals, for example, 3660 + ... + 7660.

It is an arithmetic number, because the mean of its divisors is an integer number (1988994).

Almost surely, 2^22645660 is an apocalyptic number.

22645660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22645660 is an abundant number, since it is smaller than the sum of its proper divisors (25090196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22645660 is a wasteful number, since it uses less digits than its factorization.

22645660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4293 (or 4291 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 22645660 is about 4758.7456330424. The cubic root of 22645660 is about 282.9187045643.

The spelling of 22645660 in words is "twenty-two million, six hundred forty-five thousand, six hundred sixty".