610787081 has 2 divisors, whose sum is σ = 610787082. Its totient is φ = 610787080.

The previous prime is 610787077. The next prime is 610787087. The reversal of 610787081 is 180787016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 602260681 + 8526400 = 24541^2 + 2920^2 .

It is a cyclic number.

It is not a de Polignac number, because 610787081 - 2² = 610787077 is a prime.

It is a super-2 number, since 2×610787081² = 746121716633001122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (610787087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305393540 + 305393541.

It is an arithmetic number, because the mean of its divisors is an integer number (305393541).

Almost surely, 2^610787081 is an apocalyptic number.

It is an amenable number.

610787081 is a deficient number, since it is larger than the sum of its proper divisors (1).

610787081 is an equidigital number, since it uses as much as digits as its factorization.

610787081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 38.

The square root of 610787081 is about 24714.1069229701. The cubic root of 610787081 is about 848.4572157809.

The spelling of 610787081 in words is "six hundred ten million, seven hundred eighty-seven thousand, eighty-one".