61605534 has 32 divisors (see below), whose sum is σ = 126895104. Its totient is φ = 19926720.

The previous prime is 61605529. The next prime is 61605539. The reversal of 61605534 is 43550616.

61605534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61605529) and next prime (61605539).

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 15 ways as a sum of consecutive naturals, for example, 54297 + ... + 55419.

It is an arithmetic number, because the mean of its divisors is an integer number (3965472).

Almost surely, 2^61605534 is an apocalyptic number.

61605534 is an abundant number, since it is smaller than the sum of its proper divisors (65289570).

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

61605534 is a wasteful number, since it uses less digits than its factorization.

61605534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 61605534 is about 7848.9192886664. The cubic root of 61605534 is about 394.9479908023.

The spelling of 61605534 in words is "sixty-one million, six hundred five thousand, five hundred thirty-four".