1906622 has 8 divisors (see below), whose sum is σ = 2914056. Its totient is φ = 935272.

The previous prime is 1906621. The next prime is 1906627. The reversal of 1906622 is 2266091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1906591 and 1906600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8888 + ... + 9099.

It is an arithmetic number, because the mean of its divisors is an integer number (364257).

2^1906622 is an apocalyptic number.

1906622 is a deficient number, since it is larger than the sum of its proper divisors (1007434).

1906622 is a wasteful number, since it uses less digits than its factorization.

1906622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18042.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1906622 is about 1380.8048377667. The cubic root of 1906622 is about 123.9999566424. Note that the first 4 decimals are identical.

The spelling of 1906622 in words is "one million, nine hundred six thousand, six hundred twenty-two".