1672206217 has 8 divisors (see below), whose sum is σ = 1824769440. Its totient is φ = 1519733760.

The previous prime is 1672206209. The next prime is 1672206227. The reversal of 1672206217 is 7126022761.

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

It is a cyclic number.

It is not a de Polignac number, because 1672206217 - 2³ = 1672206209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1672206227) 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, 19209 + ... + 60937.

It is an arithmetic number, because the mean of its divisors is an integer number (228096180).

Almost surely, 2^1672206217 is an apocalyptic number.

It is an amenable number.

1672206217 is a deficient number, since it is larger than the sum of its proper divisors (152563223).

1672206217 is a wasteful number, since it uses less digits than its factorization.

1672206217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45383.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 1672206217 is about 40892.6181235685. The cubic root of 1672206217 is about 1186.9432214904.

Adding to 1672206217 its reverse (7126022761), we get a palindrome (8798228978).

The spelling of 1672206217 in words is "one billion, six hundred seventy-two million, two hundred six thousand, two hundred seventeen".