1672400085 has 8 divisors (see below), whose sum is σ = 2675840160. Its totient is φ = 891946704.

The previous prime is 1672400071. The next prime is 1672400089. The reversal of 1672400085 is 5800042761.

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

It is not a de Polignac number, because 1672400085 - 2⁴ = 1672400069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672400089) 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, 55746655 + ... + 55746684.

It is an arithmetic number, because the mean of its divisors is an integer number (334480020).

Almost surely, 2^1672400085 is an apocalyptic number.

1672400085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1672400085 is a deficient number, since it is larger than the sum of its proper divisors (1003440075).

1672400085 is a wasteful number, since it uses less digits than its factorization.

1672400085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111493347.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 1672400085 is about 40894.9885071508. The cubic root of 1672400085 is about 1186.9890893214.

The spelling of 1672400085 in words is "one billion, six hundred seventy-two million, four hundred thousand, eighty-five".