3646620473 has 2 divisors, whose sum is σ = 3646620474. Its totient is φ = 3646620472.

The previous prime is 3646620431. The next prime is 3646620499. The reversal of 3646620473 is 3740266463.

3646620473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3644899129 + 1721344 = 60373^2 + 1312^2 .

It is a cyclic number.

It is not a de Polignac number, because 3646620473 - 2⁸ = 3646620217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3646620473.

It is not a weakly prime, because it can be changed into another prime (3646620413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1823310236 + 1823310237.

It is an arithmetic number, because the mean of its divisors is an integer number (1823310237).

Almost surely, 2^3646620473 is an apocalyptic number.

It is an amenable number.

3646620473 is a deficient number, since it is larger than the sum of its proper divisors (1).

3646620473 is an equidigital number, since it uses as much as digits as its factorization.

3646620473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 41.

The square root of 3646620473 is about 60387.2542263680. The cubic root of 3646620473 is about 1539.2063815827.

The spelling of 3646620473 in words is "three billion, six hundred forty-six million, six hundred twenty thousand, four hundred seventy-three".