61035820 has 36 divisors (see below), whose sum is σ = 129860640. Its totient is φ = 24097024.

The previous prime is 61035817. The next prime is 61035823. The reversal of 61035820 is 2853016.

It is a happy number.

61035820 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 (61035817) and next prime (61035823).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61035823) 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 11 ways as a sum of consecutive naturals, for example, 255261 + ... + 255499.

It is an arithmetic number, because the mean of its divisors is an integer number (3607240).

Almost surely, 2^61035820 is an apocalyptic number.

It is an amenable number.

61035820 is an abundant number, since it is smaller than the sum of its proper divisors (68824820).

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

61035820 is a wasteful number, since it uses less digits than its factorization.

61035820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 61035820 is about 7812.5424798845. The cubic root of 61035820 is about 393.7267553255.

Adding to 61035820 its reverse (2853016), we get a palindrome (63888836).

The spelling of 61035820 in words is "sixty-one million, thirty-five thousand, eight hundred twenty".