1997106 has 8 divisors (see below), whose sum is σ = 3994224. Its totient is φ = 665700.

The previous prime is 1997101. The next prime is 1997111. The reversal of 1997106 is 6017991.

It is an interprime number because it is at equal distance from previous prime (1997101) and next prime (1997111).

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

1997106 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1997101) 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, 166420 + ... + 166431.

It is an arithmetic number, because the mean of its divisors is an integer number (499278).

2^1997106 is an apocalyptic number.

1997106 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1997106 is a wasteful number, since it uses less digits than its factorization.

1997106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332856.

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 1997106 is about 1413.1900084560. The cubic root of 1997106 is about 125.9313054624.

The spelling of 1997106 in words is "one million, nine hundred ninety-seven thousand, one hundred six".