610663489 has 4 divisors (see below), whose sum is σ = 610727380. Its totient is φ = 610599600.

The previous prime is 610663483. The next prime is 610663517. The reversal of 610663489 is 984366016.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 174689089 + 435974400 = 13217^2 + 20880^2 .

It is a cyclic number.

It is not a de Polignac number, because 610663489 - 2⁵ = 610663457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (610663483) 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, 14394 + ... + 37795.

It is an arithmetic number, because the mean of its divisors is an integer number (152681845).

Almost surely, 2^610663489 is an apocalyptic number.

It is an amenable number.

610663489 is a deficient number, since it is larger than the sum of its proper divisors (63891).

610663489 is a wasteful number, since it uses less digits than its factorization.

610663489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63890.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 610663489 is about 24711.6063621935. The cubic root of 610663489 is about 848.3999838359.

The spelling of 610663489 in words is "six hundred ten million, six hundred sixty-three thousand, four hundred eighty-nine".