610028261 has 4 divisors (see below), whose sum is σ = 629706624. Its totient is φ = 590349900.

The previous prime is 610028249. The next prime is 610028297. The reversal of 610028261 is 162820016.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 610028261 - 2²⁶ = 542919397 is a prime.

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 610028261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610025261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9839135 + ... + 9839196.

It is an arithmetic number, because the mean of its divisors is an integer number (157426656).

Almost surely, 2^610028261 is an apocalyptic number.

It is an amenable number.

610028261 is a deficient number, since it is larger than the sum of its proper divisors (19678363).

610028261 is a wasteful number, since it uses less digits than its factorization.

610028261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19678362.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 610028261 is about 24698.7501910522. The cubic root of 610028261 is about 848.1057058844.

Adding to 610028261 its reverse (162820016), we get a palindrome (772848277).

The spelling of 610028261 in words is "six hundred ten million, twenty-eight thousand, two hundred sixty-one".