1672397 has 4 divisors (see below), whose sum is σ = 1681920. Its totient is φ = 1662876.

The previous prime is 1672393. The next prime is 1672421. The reversal of 1672397 is 7932761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1672397 - 2² = 1672393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672393) 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, 4493 + ... + 4850.

It is an arithmetic number, because the mean of its divisors is an integer number (420480).

2^1672397 is an apocalyptic number.

It is an amenable number.

1672397 is a deficient number, since it is larger than the sum of its proper divisors (9523).

1672397 is an equidigital number, since it uses as much as digits as its factorization.

1672397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9522.

The product of its digits is 15876, while the sum is 35.

The square root of 1672397 is about 1293.2118929240. The cubic root of 1672397 is about 118.6988359459.

The spelling of 1672397 in words is "one million, six hundred seventy-two thousand, three hundred ninety-seven".