1667622 has 24 divisors (see below), whose sum is σ = 3667608. Its totient is φ = 505120.

The previous prime is 1667609. The next prime is 1667623. The reversal of 1667622 is 2267661.

It is a self number, because there is not a number n which added to its sum of digits gives 1667622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1667623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 423 + ... + 1874.

It is an arithmetic number, because the mean of its divisors is an integer number (152817).

2^1667622 is an apocalyptic number.

1667622 is an abundant number, since it is smaller than the sum of its proper divisors (1999986).

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

1667622 is a wasteful number, since it uses less digits than its factorization.

1667622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2324 (or 2313 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 1667622 is about 1291.3643947391. The cubic root of 1667622 is about 118.5857592810.

The spelling of 1667622 in words is "one million, six hundred sixty-seven thousand, six hundred twenty-two".