61871488 has 64 divisors (see below), whose sum is σ = 141984000. Its totient is φ = 26307072.

The previous prime is 61871477. The next prime is 61871503. The reversal of 61871488 is 88417816.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178131 + ... + 178477.

It is an arithmetic number, because the mean of its divisors is an integer number (2218500).

Almost surely, 2^61871488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61871488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70992000).

61871488 is an abundant number, since it is smaller than the sum of its proper divisors (80112512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61871488 is a wasteful number, since it uses less digits than its factorization.

61871488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567 (or 555 counting only the distinct ones).

The product of its digits is 86016, while the sum is 43.

The square root of 61871488 is about 7865.8431207341. The cubic root of 61871488 is about 395.5155112899.

The spelling of 61871488 in words is "sixty-one million, eight hundred seventy-one thousand, four hundred eighty-eight".