3664426673 has 2 divisors, whose sum is σ = 3664426674. Its totient is φ = 3664426672.

The previous prime is 3664426663. The next prime is 3664426679. The reversal of 3664426673 is 3766244663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2496701089 + 1167725584 = 49967^2 + 34172^2 .

It is an emirp because it is prime and its reverse (3766244663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3664426673 - 2¹⁶ = 3664361137 is a prime.

It is not a weakly prime, because it can be changed into another prime (3664426679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1832213336 + 1832213337.

It is an arithmetic number, because the mean of its divisors is an integer number (1832213337).

Almost surely, 2^3664426673 is an apocalyptic number.

It is an amenable number.

3664426673 is a deficient number, since it is larger than the sum of its proper divisors (1).

3664426673 is an equidigital number, since it uses as much as digits as its factorization.

3664426673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 47.

The square root of 3664426673 is about 60534.5081172714. The cubic root of 3664426673 is about 1541.7075949644.

The spelling of 3664426673 in words is "three billion, six hundred sixty-four million, four hundred twenty-six thousand, six hundred seventy-three".