1672706409 has 8 divisors (see below), whose sum is σ = 2433027552. Its totient is φ = 1013761440.

The previous prime is 1672706377. The next prime is 1672706429. The reversal of 1672706409 is 9046072761.

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

It is not a de Polignac number, because 1672706409 - 2⁵ = 1672706377 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1672706429) 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, 25344004 + ... + 25344069.

It is an arithmetic number, because the mean of its divisors is an integer number (304128444).

Almost surely, 2^1672706409 is an apocalyptic number.

It is an amenable number.

1672706409 is a deficient number, since it is larger than the sum of its proper divisors (760321143).

1672706409 is a wasteful number, since it uses less digits than its factorization.

1672706409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50688087.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 1672706409 is about 40898.7335867506. The cubic root of 1672706409 is about 1187.0615562411.

The spelling of 1672706409 in words is "one billion, six hundred seventy-two million, seven hundred six thousand, four hundred nine".