1897066 has 4 divisors (see below), whose sum is σ = 2845602. Its totient is φ = 948532.

The previous prime is 1897057. The next prime is 1897069. The reversal of 1897066 is 6607981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1625625 + 271441 = 1275^2 + 521^2 .

It is not an unprimeable number, because it can be changed into a prime (1897069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474265 + ... + 474268.

2^1897066 is an apocalyptic number.

1897066 is a deficient number, since it is larger than the sum of its proper divisors (948536).

1897066 is an equidigital number, since it uses as much as digits as its factorization.

1897066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948535.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 1897066 is about 1377.3401903669. The cubic root of 1897066 is about 123.7924467524.

Subtracting 1897066 from its reverse (6607981), we obtain a triangular number (4710915 = T₃₀₆₉).

The spelling of 1897066 in words is "one million, eight hundred ninety-seven thousand, sixty-six".