61803534 has 64 divisors (see below), whose sum is σ = 142442496. Its totient is φ = 17708544.

The previous prime is 61803487. The next prime is 61803571. The reversal of 61803534 is 43530816.

61803534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 168219 + ... + 168585.

It is an arithmetic number, because the mean of its divisors is an integer number (2225664).

Almost surely, 2^61803534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61803534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71221248).

61803534 is an abundant number, since it is smaller than the sum of its proper divisors (80638962).

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

61803534 is a wasteful number, since it uses less digits than its factorization.

61803534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 61803534 is about 7861.5223716530. The cubic root of 61803534 is about 395.3706588566.

The spelling of 61803534 in words is "sixty-one million, eight hundred three thousand, five hundred thirty-four".