1996901 has 2 divisors, whose sum is σ = 1996902. Its totient is φ = 1996900.

The previous prime is 1996879. The next prime is 1996903. The reversal of 1996901 is 1096991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1890625 + 106276 = 1375^2 + 326^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1996901 is a prime.

It is a super-2 number, since 2×1996901² = 7975227207602, which contains 22 as substring.

Together with 1996903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1996903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998450 + 998451.

It is an arithmetic number, because the mean of its divisors is an integer number (998451).

2^1996901 is an apocalyptic number.

It is an amenable number.

1996901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1996901 is an equidigital number, since it uses as much as digits as its factorization.

1996901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 35.

The square root of 1996901 is about 1413.1174756544. The cubic root of 1996901 is about 125.9269964271.

The spelling of 1996901 in words is "one million, nine hundred ninety-six thousand, nine hundred one".