61136485 has 8 divisors (see below), whose sum is σ = 73476216. Its totient is φ = 48834240.

The previous prime is 61136473. The next prime is 61136489. The reversal of 61136485 is 58463116.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34117281 + 27019204 = 5841^2 + 5198^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-61136485 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61136485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61136489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5646 + ... + 12415.

It is an arithmetic number, because the mean of its divisors is an integer number (9184527).

Almost surely, 2^61136485 is an apocalyptic number.

It is an amenable number.

61136485 is a deficient number, since it is larger than the sum of its proper divisors (12339731).

61136485 is a wasteful number, since it uses less digits than its factorization.

61136485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18743.

The product of its digits is 17280, while the sum is 34.

The square root of 61136485 is about 7818.9823506643. The cubic root of 61136485 is about 393.9430913194.

The spelling of 61136485 in words is "sixty-one million, one hundred thirty-six thousand, four hundred eighty-five".