61911360 has 336 divisors, whose sum is σ = 252959616. Its totient is φ = 13602816.

The previous prime is 61911349. The next prime is 61911391. The reversal of 61911360 is 6311916.

61911360 is a `hidden beast` number, since 619 + 11 + 36 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 745879 + ... + 745961.

It is an arithmetic number, because the mean of its divisors is an integer number (752856).

Almost surely, 2^61911360 is an apocalyptic number.

61911360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61911360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126479808).

61911360 is an abundant number, since it is smaller than the sum of its proper divisors (191048256).

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

61911360 is a wasteful number, since it uses less digits than its factorization.

61911360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 61911360 is about 7868.3772151569. The cubic root of 61911360 is about 395.6004540674.

The spelling of 61911360 in words is "sixty-one million, nine hundred eleven thousand, three hundred sixty".