1990701 has 12 divisors (see below), whose sum is σ = 2888028. Its totient is φ = 1321344.

The previous prime is 1990693. The next prime is 1990753. The reversal of 1990701 is 1070991.

It can be written as a sum of positive squares in 2 ways, for example, as 1153476 + 837225 = 1074^2 + 915^2 .

It is not a de Polignac number, because 1990701 - 2³ = 1990693 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997701) 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, 3061 + ... + 3653.

It is an arithmetic number, because the mean of its divisors is an integer number (240669).

2^1990701 is an apocalyptic number.

It is an amenable number.

1990701 is a deficient number, since it is larger than the sum of its proper divisors (897327).

1990701 is a wasteful number, since it uses less digits than its factorization.

1990701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972 (or 969 counting only the distinct ones).

The product of its (nonzero) digits is 567, while the sum is 27.

The square root of 1990701 is about 1410.9220389518. The cubic root of 1990701 is about 125.7965348104.

The spelling of 1990701 in words is "one million, nine hundred ninety thousand, seven hundred one".