610488721 has 2 divisors, whose sum is σ = 610488722. Its totient is φ = 610488720.

The previous prime is 610488713. The next prime is 610488731. The reversal of 610488721 is 127884016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 542657025 + 67831696 = 23295^2 + 8236^2 .

It is a cyclic number.

It is not a de Polignac number, because 610488721 - 2³ = 610488713 is a prime.

It is not a weakly prime, because it can be changed into another prime (610488731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305244360 + 305244361.

It is an arithmetic number, because the mean of its divisors is an integer number (305244361).

Almost surely, 2^610488721 is an apocalyptic number.

It is an amenable number.

610488721 is a deficient number, since it is larger than the sum of its proper divisors (1).

610488721 is an equidigital number, since it uses as much as digits as its factorization.

610488721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 610488721 is about 24708.0699569999. The cubic root of 610488721 is about 848.3190405568.

The spelling of 610488721 in words is "six hundred ten million, four hundred eighty-eight thousand, seven hundred twenty-one".