1698961 has 12 divisors (see below), whose sum is σ = 1968400. Its totient is φ = 1461240.

The previous prime is 1698953. The next prime is 1698967.

1698961 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1698961 - 2³ = 1698953 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1698967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1930 + ... + 2668.

2^1698961 is an apocalyptic number.

1698961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1698961 is a deficient number, since it is larger than the sum of its proper divisors (269439).

1698961 is a wasteful number, since it uses less digits than its factorization.

1698961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780 (or 769 counting only the distinct ones).

The product of its digits is 23328, while the sum is 40.

The square root of 1698961 is about 1303.4419818312. The cubic root of 1698961 is about 119.3239999428.

The spelling of 1698961 in words is "one million, six hundred ninety-eight thousand, nine hundred sixty-one".