610639801 has 2 divisors, whose sum is σ = 610639802. Its totient is φ = 610639800.

The previous prime is 610639789. The next prime is 610639819. The reversal of 610639801 is 108936016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435765625 + 174874176 = 20875^2 + 13224^2 .

It is a cyclic number.

It is not a de Polignac number, because 610639801 - 2¹⁷ = 610508729 is a prime.

It is not a weakly prime, because it can be changed into another prime (610639501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305319900 + 305319901.

It is an arithmetic number, because the mean of its divisors is an integer number (305319901).

Almost surely, 2^610639801 is an apocalyptic number.

It is an amenable number.

610639801 is a deficient number, since it is larger than the sum of its proper divisors (1).

610639801 is an equidigital number, since it uses as much as digits as its factorization.

610639801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 610639801 is about 24711.1270685900. The cubic root of 610639801 is about 848.3890137140.

The spelling of 610639801 in words is "six hundred ten million, six hundred thirty-nine thousand, eight hundred one".