1662097 has 4 divisors (see below), whose sum is σ = 1664740. Its totient is φ = 1659456.

The previous prime is 1662083. The next prime is 1662103. The reversal of 1662097 is 7902661.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1615441 + 46656 = 1271^2 + 216^2 .

It is a cyclic number.

It is not a de Polignac number, because 1662097 - 2⁷ = 1661969 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1662007) 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, 229 + ... + 1837.

It is an arithmetic number, because the mean of its divisors is an integer number (416185).

2^1662097 is an apocalyptic number.

It is an amenable number.

1662097 is a deficient number, since it is larger than the sum of its proper divisors (2643).

1662097 is a wasteful number, since it uses less digits than its factorization.

1662097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2642.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 1662097 is about 1289.2234096540. The cubic root of 1662097 is about 118.4546521874.

Subtracting from 1662097 its product of nonzero digits (4536), we obtain a palindrome (1657561).

The spelling of 1662097 in words is "one million, six hundred sixty-two thousand, ninety-seven".