61210489 has 6 divisors (see below), whose sum is σ = 65023214. Its totient is φ = 57609600.

The previous prime is 61210477. The next prime is 61210493. The reversal of 61210489 is 98401216.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 8037225 + 53173264 = 2835^2 + 7292^2 .

It is not a de Polignac number, because 61210489 - 2⁷ = 61210361 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 61210489.

It is not an unprimeable number, because it can be changed into a prime (61210439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105612 + ... + 106189.

Almost surely, 2^61210489 is an apocalyptic number.

It is an amenable number.

61210489 is a deficient number, since it is larger than the sum of its proper divisors (3812725).

61210489 is a wasteful number, since it uses less digits than its factorization.

61210489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211835 (or 211818 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 61210489 is about 7823.7132488352. The cubic root of 61210489 is about 394.1019795802.

The spelling of 61210489 in words is "sixty-one million, two hundred ten thousand, four hundred eighty-nine".