1001970 has 40 divisors (see below), whose sum is σ = 2696364. Its totient is φ = 266976.

The previous prime is 1001953. The next prime is 1001977. The reversal of 1001970 is 791001.

It can be written as a sum of positive squares in 2 ways, for example, as 998001 + 3969 = 999^2 + 63^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1001977) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 192 + ... + 1428.

2^1001970 is an apocalyptic number.

1001970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1348182).

1001970 is an abundant number, since it is smaller than the sum of its proper divisors (1694394).

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

1001970 is a wasteful number, since it uses less digits than its factorization.

1001970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256 (or 1247 counting only the distinct ones).

The product of its (nonzero) digits is 63, while the sum is 18.

The square root of 1001970 is about 1000.9845153647. The cubic root of 1001970 is about 100.0656235927.

Adding to 1001970 its reverse (791001), we get a palindrome (1792971).

The spelling of 1001970 in words is "one million, one thousand, nine hundred seventy".