1697272206436 has 9 divisors (see below), whose sum is σ = 2970230921049. Its totient is φ = 848634800424.

The previous prime is 1697272206379. The next prime is 1697272206437. The reversal of 1697272206436 is 6346022727961.

The square root of 1697272206436 is 1302794.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1564525656100 + 132746550336 = 1250810^2 + 364344^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1697272206437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2279890 + ... + 2931286.

Almost surely, 2^{1697272206436} is an apocalyptic number.

1697272206436 is the 1302794-th square number.

It is an amenable number.

1697272206436 is a deficient number, since it is larger than the sum of its proper divisors (1272958714613).

1697272206436 is an frugal number, since it uses more digits than its factorization.

1697272206436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302798 (or 651399 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 55.

The spelling of 1697272206436 in words is "one trillion, six hundred ninety-seven billion, two hundred seventy-two million, two hundred six thousand, four hundred thirty-six".