61386774 has 16 divisors (see below), whose sum is σ = 126092208. Its totient is φ = 19909152.

The previous prime is 61386769. The next prime is 61386781. The reversal of 61386774 is 47768316.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138037 + ... + 138480.

It is an arithmetic number, because the mean of its divisors is an integer number (7880763).

Almost surely, 2^61386774 is an apocalyptic number.

61386774 is an abundant number, since it is smaller than the sum of its proper divisors (64705434).

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

61386774 is a wasteful number, since it uses less digits than its factorization.

61386774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276559.

The product of its digits is 169344, while the sum is 42.

The square root of 61386774 is about 7834.9712188367. The cubic root of 61386774 is about 394.4799522679.

The spelling of 61386774 in words is "sixty-one million, three hundred eighty-six thousand, seven hundred seventy-four".