61884589 has 6 divisors (see below), whose sum is σ = 67011306. Its totient is φ = 57124080.

The previous prime is 61884583. The next prime is 61884601. The reversal of 61884589 is 98548816.

It can be written as a sum of positive squares in 3 ways, for example, as 1946025 + 59938564 = 1395^2 + 7742^2 .

It is not a de Polignac number, because 61884589 - 2¹⁹ = 61360301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61884583) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 182922 + ... + 183259.

It is an arithmetic number, because the mean of its divisors is an integer number (11168551).

Almost surely, 2^61884589 is an apocalyptic number.

It is an amenable number.

61884589 is a deficient number, since it is larger than the sum of its proper divisors (5126717).

61884589 is a wasteful number, since it uses less digits than its factorization.

61884589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366207 (or 366194 counting only the distinct ones).

The product of its digits is 552960, while the sum is 49.

The square root of 61884589 is about 7866.6758545144. The cubic root of 61884589 is about 395.5434255101.

The spelling of 61884589 in words is "sixty-one million, eight hundred eighty-four thousand, five hundred eighty-nine".