1697972 has 6 divisors (see below), whose sum is σ = 2971458. Its totient is φ = 848984.

The previous prime is 1697959. The next prime is 1697987. The reversal of 1697972 is 2797961.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1240996 + 456976 = 1114^2 + 676^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 212243 + ... + 212250.

It is an arithmetic number, because the mean of its divisors is an integer number (495243).

2^1697972 is an apocalyptic number.

It is an amenable number.

1697972 is a deficient number, since it is larger than the sum of its proper divisors (1273486).

1697972 is a wasteful number, since it uses less digits than its factorization.

1697972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424497 (or 424495 counting only the distinct ones).

The product of its digits is 47628, while the sum is 41.

The square root of 1697972 is about 1303.0625464651. The cubic root of 1697972 is about 119.3008418004.

The spelling of 1697972 in words is "one million, six hundred ninety-seven thousand, nine hundred seventy-two".