610087681 has 12 divisors (see below), whose sum is σ = 710553108. Its totient is φ = 522299232.

The previous prime is 610087649. The next prime is 610087711. The reversal of 610087681 is 186780016.

It can be written as a sum of positive squares in 2 ways, for example, as 571449025 + 38638656 = 23905^2 + 6216^2 .

It is not a de Polignac number, because 610087681 - 2⁵ = 610087649 is a prime.

It is a super-2 number, since 2×610087681² = 744413957015915522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 610087681.

It is not an unprimeable number, because it can be changed into a prime (610087601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35875 + ... + 50071.

It is an arithmetic number, because the mean of its divisors is an integer number (59212759).

Almost surely, 2^610087681 is an apocalyptic number.

It is an amenable number.

610087681 is a deficient number, since it is larger than the sum of its proper divisors (100465427).

610087681 is a wasteful number, since it uses less digits than its factorization.

610087681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15088 (or 15081 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 610087681 is about 24699.9530566356. The cubic root of 610087681 is about 848.1332416605.

The spelling of 610087681 in words is "six hundred ten million, eighty-seven thousand, six hundred eighty-one".