1609698 has 8 divisors (see below), whose sum is σ = 3219408. Its totient is φ = 536564.

The previous prime is 1609693. The next prime is 1609717. The reversal of 1609698 is 8969061.

It is a sphenic number, since it is the product of 3 distinct primes.

1609698 is an admirable number.

It is a super-2 number, since 2×1609698² = 5182255302408, which contains 22 as substring.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1609691) 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 3 ways as a sum of consecutive naturals, for example, 134136 + ... + 134147.

It is an arithmetic number, because the mean of its divisors is an integer number (402426).

2^1609698 is an apocalyptic number.

1609698 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1609698 is a wasteful number, since it uses less digits than its factorization.

1609698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268288.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 1609698 is about 1268.7387437924. The cubic root of 1609698 is about 117.1965430533.

The spelling of 1609698 in words is "one million, six hundred nine thousand, six hundred ninety-eight".