1697089423 has 4 divisors (see below), whose sum is σ = 1698337728. Its totient is φ = 1695841120.

The previous prime is 1697089421. The next prime is 1697089439. The reversal of 1697089423 is 3249807961.

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

It is a cyclic number.

It is not a de Polignac number, because 1697089423 - 2¹ = 1697089421 is a prime.

It is a super-2 number, since 2×1697089423² = 5760225019316945858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1697089421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 622111 + ... + 624832.

It is an arithmetic number, because the mean of its divisors is an integer number (424584432).

Almost surely, 2^1697089423 is an apocalyptic number.

1697089423 is a deficient number, since it is larger than the sum of its proper divisors (1248305).

1697089423 is a wasteful number, since it uses less digits than its factorization.

1697089423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248304.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 1697089423 is about 41195.7452050573. The cubic root of 1697089423 is about 1192.8016803439.

The spelling of 1697089423 in words is "one billion, six hundred ninety-seven million, eighty-nine thousand, four hundred twenty-three".