61651536 has 40 divisors (see below), whose sum is σ = 163156224. Its totient is φ = 20048640.

The previous prime is 61651531. The next prime is 61651543. The reversal of 61651536 is 63515616.

61651536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61651497 and 61651506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61651531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13696 + ... + 17631.

Almost surely, 2^61651536 is an apocalyptic number.

It is an amenable number.

61651536 is an abundant number, since it is smaller than the sum of its proper divisors (101504688).

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

61651536 is a wasteful number, since it uses less digits than its factorization.

61651536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31379 (or 31373 counting only the distinct ones).

The product of its digits is 16200, while the sum is 33.

The square root of 61651536 is about 7851.8492089443. The cubic root of 61651536 is about 395.0462713513.

The spelling of 61651536 in words is "sixty-one million, six hundred fifty-one thousand, five hundred thirty-six".