3651673 has 2 divisors, whose sum is σ = 3651674. Its totient is φ = 3651672.

The previous prime is 3651671. The next prime is 3651731. The reversal of 3651673 is 3761563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3069504 + 582169 = 1752^2 + 763^2 .

It is a cyclic number.

It is not a de Polignac number, because 3651673 - 2¹ = 3651671 is a prime.

Together with 3651671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3651671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1825836 + 1825837.

It is an arithmetic number, because the mean of its divisors is an integer number (1825837).

Almost surely, 2^3651673 is an apocalyptic number.

It is an amenable number.

3651673 is a deficient number, since it is larger than the sum of its proper divisors (1).

3651673 is an equidigital number, since it uses as much as digits as its factorization.

3651673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 31.

The square root of 3651673 is about 1910.9351114049. The cubic root of 3651673 is about 153.9916929235.

The spelling of 3651673 in words is "three million, six hundred fifty-one thousand, six hundred seventy-three".