1697045047 has 4 divisors (see below), whose sum is σ = 1700182456. Its totient is φ = 1693907640.

The previous prime is 1697045039. The next prime is 1697045069. The reversal of 1697045047 is 7405407961.

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 1697045047 - 2³ = 1697045039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1697044994 and 1697045012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1697045017) 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, 1567893 + ... + 1568974.

It is an arithmetic number, because the mean of its divisors is an integer number (425045614).

Almost surely, 2^1697045047 is an apocalyptic number.

1697045047 is a deficient number, since it is larger than the sum of its proper divisors (3137409).

1697045047 is an equidigital number, since it uses as much as digits as its factorization.

1697045047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3137408.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 1697045047 is about 41195.2066022250. The cubic root of 1697045047 is about 1192.7912836753.

The spelling of 1697045047 in words is "one billion, six hundred ninety-seven million, forty-five thousand, forty-seven".