61375536 has 80 divisors (see below), whose sum is σ = 181893120. Its totient is φ = 19794240.

The previous prime is 61375519. The next prime is 61375541. The reversal of 61375536 is 63557316.

It is a happy number.

61375536 is a `hidden beast` number, since 613 + 7 + 5 + 5 + 36 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 61375536.

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, 11101 + ... + 15683.

It is an arithmetic number, because the mean of its divisors is an integer number (2273664).

Almost surely, 2^61375536 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 61375536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90946560).

61375536 is an abundant number, since it is smaller than the sum of its proper divisors (120517584).

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

61375536 is a wasteful number, since it uses less digits than its factorization.

61375536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4631 (or 4619 counting only the distinct ones).

The product of its digits is 56700, while the sum is 36.

The square root of 61375536 is about 7834.2540168162. The cubic root of 61375536 is about 394.4558784815.

The spelling of 61375536 in words is "sixty-one million, three hundred seventy-five thousand, five hundred thirty-six".