1672805227 has 4 divisors (see below), whose sum is σ = 1696365936. Its totient is φ = 1649244520.

The previous prime is 1672805213. The next prime is 1672805243. The reversal of 1672805227 is 7225082761.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1672805227 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1672805227.

It is not an unprimeable number, because it can be changed into a prime (1672805297) 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, 11780248 + ... + 11780389.

It is an arithmetic number, because the mean of its divisors is an integer number (424091484).

Almost surely, 2^1672805227 is an apocalyptic number.

1672805227 is a deficient number, since it is larger than the sum of its proper divisors (23560709).

1672805227 is an equidigital number, since it uses as much as digits as its factorization.

1672805227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23560708.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 1672805227 is about 40899.9416503251. The cubic root of 1672805227 is about 1187.0849316800.

Adding to 1672805227 its reverse (7225082761), we get a palindrome (8897887988).

The spelling of 1672805227 in words is "one billion, six hundred seventy-two million, eight hundred five thousand, two hundred twenty-seven".