1672001 has 8 divisors (see below), whose sum is σ = 1801440. Its totient is φ = 1546048.

The previous prime is 1671997. The next prime is 1672003. The reversal of 1672001 is 1002761.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1672001 - 2² = 1671997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170 + ... + 1836.

It is an arithmetic number, because the mean of its divisors is an integer number (225180).

2^1672001 is an apocalyptic number.

It is an amenable number.

1672001 is a deficient number, since it is larger than the sum of its proper divisors (129439).

1672001 is a wasteful number, since it uses less digits than its factorization.

1672001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 1672001 is about 1293.0587766997. The cubic root of 1672001 is about 118.6894664702.

Adding to 1672001 its reverse (1002761), we get a palindrome (2674762).

The spelling of 1672001 in words is "one million, six hundred seventy-two thousand, one".