1672697 has 4 divisors (see below), whose sum is σ = 1801380. Its totient is φ = 1544016.

The previous prime is 1672663. The next prime is 1672747. The reversal of 1672697 is 7962761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7962761 = 23 ⋅346207.

It can be written as a sum of positive squares in 2 ways, for example, as 87616 + 1585081 = 296^2 + 1259^2 .

It is a cyclic number.

It is not a de Polignac number, because 1672697 - 2⁸ = 1672441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1672697.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64322 + ... + 64347.

It is an arithmetic number, because the mean of its divisors is an integer number (450345).

2^1672697 is an apocalyptic number.

It is an amenable number.

1672697 is a deficient number, since it is larger than the sum of its proper divisors (128683).

1672697 is a wasteful number, since it uses less digits than its factorization.

1672697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128682.

The product of its digits is 31752, while the sum is 38.

The square root of 1672697 is about 1293.3278779954. The cubic root of 1672697 is about 118.7059330490.

Subtracting 1672697 from its reverse (7962761), we obtain a square (6290064 = 2508²).

The spelling of 1672697 in words is "one million, six hundred seventy-two thousand, six hundred ninety-seven".