61939160 has 64 divisors (see below), whose sum is σ = 149558400. Its totient is φ = 23003136.

The previous prime is 61939127. The next prime is 61939181. The reversal of 61939160 is 6193916.

61939160 = T₃₉ + T₄₀ + ... + T₇₁₈.

It is a self number, because there is not a number n which added to its sum of digits gives 61939160.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53144 + ... + 54296.

It is an arithmetic number, because the mean of its divisors is an integer number (2336850).

Almost surely, 2^61939160 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 61939160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74779200).

61939160 is an abundant number, since it is smaller than the sum of its proper divisors (87619240).

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

61939160 is a wasteful number, since it uses less digits than its factorization.

61939160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260 (or 1256 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 61939160 is about 7870.1435819177. The cubic root of 61939160 is about 395.6596572407.

The spelling of 61939160 in words is "sixty-one million, nine hundred thirty-nine thousand, one hundred sixty".