61489311 has 8 divisors (see below), whose sum is σ = 88292400. Its totient is φ = 37839552.

The previous prime is 61489303. The next prime is 61489319. The reversal of 61489311 is 11398416.

61489311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61489303) and next prime (61489319).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61489311 - 2³ = 61489303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61489319) 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 7 ways as a sum of consecutive naturals, for example, 788286 + ... + 788363.

It is an arithmetic number, because the mean of its divisors is an integer number (11036550).

Almost surely, 2^61489311 is an apocalyptic number.

61489311 is a deficient number, since it is larger than the sum of its proper divisors (26803089).

61489311 is a wasteful number, since it uses less digits than its factorization.

61489311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576665.

The product of its digits is 5184, while the sum is 33.

The square root of 61489311 is about 7841.5120353156. The cubic root of 61489311 is about 394.6994691008.

The spelling of 61489311 in words is "sixty-one million, four hundred eighty-nine thousand, three hundred eleven".