1674570221 has 2 divisors, whose sum is σ = 1674570222. Its totient is φ = 1674570220.

The previous prime is 1674570211. The next prime is 1674570277. The reversal of 1674570221 is 1220754761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1308268900 + 366301321 = 36170^2 + 19139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1674570221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1674570211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 837285110 + 837285111.

It is an arithmetic number, because the mean of its divisors is an integer number (837285111).

Almost surely, 2^1674570221 is an apocalyptic number.

It is an amenable number.

1674570221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1674570221 is an equidigital number, since it uses as much as digits as its factorization.

1674570221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 1674570221 is about 40921.5129363517. The cubic root of 1674570221 is about 1187.5022867694.

The spelling of 1674570221 in words is "one billion, six hundred seventy-four million, five hundred seventy thousand, two hundred twenty-one".