61670560 has 192 divisors, whose sum is σ = 182891520. Its totient is φ = 19169280.

The previous prime is 61670549. The next prime is 61670569. The reversal of 61670560 is 6507616.

It is not an unprimeable number, because it can be changed into a prime (61670569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 780601 + ... + 780679.

It is an arithmetic number, because the mean of its divisors is an integer number (952560).

Almost surely, 2^61670560 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 61670560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91445760).

61670560 is an abundant number, since it is smaller than the sum of its proper divisors (121220960).

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

61670560 is a wasteful number, since it uses less digits than its factorization.

61670560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 61670560 is about 7853.0605498748. The cubic root of 61670560 is about 395.0869007115.

The spelling of 61670560 in words is "sixty-one million, six hundred seventy thousand, five hundred sixty".