61871364 has 120 divisors (see below), whose sum is σ = 175633920. Its totient is φ = 18918144.

The previous prime is 61871339. The next prime is 61871387. The reversal of 61871364 is 46317816.

61871364 is a `hidden beast` number, since 618 + 7 + 1 + 36 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 258757 + ... + 258995.

It is an arithmetic number, because the mean of its divisors is an integer number (1463616).

Almost surely, 2^61871364 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 61871364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87816960).

61871364 is an abundant number, since it is smaller than the sum of its proper divisors (113762556).

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

61871364 is a wasteful number, since it uses less digits than its factorization.

61871364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 308 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 61871364 is about 7865.8352385491. The cubic root of 61871364 is about 395.5152470650.

The spelling of 61871364 in words is "sixty-one million, eight hundred seventy-one thousand, three hundred sixty-four".