61693136 has 20 divisors (see below), whose sum is σ = 126562212. Its totient is φ = 29031936.

The previous prime is 61693129. The next prime is 61693139. The reversal of 61693136 is 63139616.

It can be written as a sum of positive squares in 2 ways, for example, as 39187600 + 22505536 = 6260^2 + 4744^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61693096 and 61693105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61693139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113135 + ... + 113678.

Almost surely, 2^61693136 is an apocalyptic number.

It is an amenable number.

61693136 is an abundant number, since it is smaller than the sum of its proper divisors (64869076).

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

61693136 is a wasteful number, since it uses less digits than its factorization.

61693136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226838 (or 226832 counting only the distinct ones).

The product of its digits is 17496, while the sum is 35.

The square root of 61693136 is about 7854.4978197209. The cubic root of 61693136 is about 395.1351052016.

The spelling of 61693136 in words is "sixty-one million, six hundred ninety-three thousand, one hundred thirty-six".