610989121 has 4 divisors (see below), whose sum is σ = 611197744. Its totient is φ = 610780500.

The previous prime is 610989101. The next prime is 610989131. The reversal of 610989121 is 121989016.

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 610989121 - 2¹¹ = 610987073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (610989101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99855 + ... + 105796.

It is an arithmetic number, because the mean of its divisors is an integer number (152799436).

Almost surely, 2^610989121 is an apocalyptic number.

It is an amenable number.

610989121 is a deficient number, since it is larger than the sum of its proper divisors (208623).

610989121 is a wasteful number, since it uses less digits than its factorization.

610989121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208622.

The product of its (nonzero) digits is 7776, while the sum is 37.

The square root of 610989121 is about 24718.1941290216. The cubic root of 610989121 is about 848.5507581425.

The spelling of 610989121 in words is "six hundred ten million, nine hundred eighty-nine thousand, one hundred twenty-one".