61386785 has 8 divisors (see below), whose sum is σ = 74152896. Its totient is φ = 48783600.

The previous prime is 61386781. The next prime is 61386791. The reversal of 61386785 is 58768316.

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

It is not a de Polignac number, because 61386785 - 2² = 61386781 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61386781) 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, 39899 + ... + 41408.

It is an arithmetic number, because the mean of its divisors is an integer number (9269112).

Almost surely, 2^61386785 is an apocalyptic number.

It is an amenable number.

61386785 is a deficient number, since it is larger than the sum of its proper divisors (12766111).

61386785 is a wasteful number, since it uses less digits than its factorization.

61386785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81463.

The product of its digits is 241920, while the sum is 44.

The square root of 61386785 is about 7834.9719208176. The cubic root of 61386785 is about 394.4799758305.

The spelling of 61386785 in words is "sixty-one million, three hundred eighty-six thousand, seven hundred eighty-five".