61286585 has 4 divisors (see below), whose sum is σ = 73543908. Its totient is φ = 49029264.

The previous prime is 61286579. The next prime is 61286591. The reversal of 61286585 is 58568216.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (61286579) and next prime (61286591).

It can be written as a sum of positive squares in 2 ways, for example, as 37589161 + 23697424 = 6131^2 + 4868^2 .

It is a cyclic number.

It is not a de Polignac number, because 61286585 - 2⁴ = 61286569 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6128654 + ... + 6128663.

It is an arithmetic number, because the mean of its divisors is an integer number (18385977).

Almost surely, 2^61286585 is an apocalyptic number.

It is an amenable number.

61286585 is a deficient number, since it is larger than the sum of its proper divisors (12257323).

61286585 is a wasteful number, since it uses less digits than its factorization.

61286585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12257322.

The product of its digits is 115200, while the sum is 41.

The square root of 61286585 is about 7828.5749022411. The cubic root of 61286585 is about 394.2652259223.

The spelling of 61286585 in words is "sixty-one million, two hundred eighty-six thousand, five hundred eighty-five".