61461020 has 12 divisors (see below), whose sum is σ = 129068184. Its totient is φ = 24584400.

The previous prime is 61461019. The next prime is 61461097. The reversal of 61461020 is 2016416.

It is a happy number.

61461020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 3073051 = 61461020 / (6 + 1 + 4 + 6 + 1 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 61460983 and 61461001.

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 3 ways as a sum of consecutive naturals, for example, 1536506 + ... + 1536545.

It is an arithmetic number, because the mean of its divisors is an integer number (10755682).

Almost surely, 2^61461020 is an apocalyptic number.

It is an amenable number.

61461020 is an abundant number, since it is smaller than the sum of its proper divisors (67607164).

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

61461020 is a wasteful number, since it uses less digits than its factorization.

61461020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3073060 (or 3073058 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 61461020 is about 7839.7079027219. The cubic root of 61461020 is about 394.6389265692.

Adding to 61461020 its reverse (2016416), we get a palindrome (63477436).

The spelling of 61461020 in words is "sixty-one million, four hundred sixty-one thousand, twenty".