61605533 has 8 divisors (see below), whose sum is σ = 67962240. Its totient is φ = 55374880.

The previous prime is 61605529. The next prime is 61605539. The reversal of 61605533 is 33550616.

61605533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 61605533 - 2² = 61605529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61605496 and 61605505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61605539) 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, 30485 + ... + 32442.

It is an arithmetic number, because the mean of its divisors is an integer number (8495280).

Almost surely, 2^61605533 is an apocalyptic number.

It is an amenable number.

61605533 is a deficient number, since it is larger than the sum of its proper divisors (6356707).

61605533 is a wasteful number, since it uses less digits than its factorization.

61605533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63027.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 61605533 is about 7848.9192249634. The cubic root of 61605533 is about 394.9479886653.

The spelling of 61605533 in words is "sixty-one million, six hundred five thousand, five hundred thirty-three".