1671672 has 16 divisors (see below), whose sum is σ = 4179240. Its totient is φ = 557216.

The previous prime is 1671671. The next prime is 1671679. The reversal of 1671672 is 2761761.

It is a happy number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1671671) 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, 34803 + ... + 34850.

2^1671672 is an apocalyptic number.

1671672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1671672 is an abundant number, since it is smaller than the sum of its proper divisors (2507568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1671672 is a wasteful number, since it uses less digits than its factorization.

1671672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69662 (or 69658 counting only the distinct ones).

The product of its digits is 3528, while the sum is 30.

The square root of 1671672 is about 1292.9315527127. The cubic root of 1671672 is about 118.6816811088.

The spelling of 1671672 in words is "one million, six hundred seventy-one thousand, six hundred seventy-two".