61020566 has 16 divisors (see below), whose sum is σ = 93139200. Its totient is φ = 29978880.

The previous prime is 61020559. The next prime is 61020577. The reversal of 61020566 is 66502016.

61020566 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 7 ways as a sum of consecutive naturals, for example, 27851 + ... + 29961.

It is an arithmetic number, because the mean of its divisors is an integer number (5821200).

Almost surely, 2^61020566 is an apocalyptic number.

61020566 is a deficient number, since it is larger than the sum of its proper divisors (32118634).

61020566 is a wasteful number, since it uses less digits than its factorization.

61020566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2359.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 61020566 is about 7811.5661681893. The cubic root of 61020566 is about 393.6939526843.

The spelling of 61020566 in words is "sixty-one million, twenty thousand, five hundred sixty-six".