16861622 has 16 divisors (see below), whose sum is σ = 26790912. Its totient is φ = 7942440.

The previous prime is 16861609. The next prime is 16861631. The reversal of 16861622 is 22616861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347 + ... + 5817.

It is an arithmetic number, because the mean of its divisors is an integer number (1674432).

Almost surely, 2^16861622 is an apocalyptic number.

16861622 is a deficient number, since it is larger than the sum of its proper divisors (9929290).

16861622 is a wasteful number, since it uses less digits than its factorization.

16861622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5563.

The product of its digits is 6912, while the sum is 32.

The square root of 16861622 is about 4106.2905401347. The cubic root of 16861622 is about 256.4285931688.

The spelling of 16861622 in words is "sixteen million, eight hundred sixty-one thousand, six hundred twenty-two".