61245564 has 24 divisors (see below), whose sum is σ = 147834960. Its totient is φ = 19711104.

The previous prime is 61245557. The next prime is 61245601. The reversal of 61245564 is 46554216.

61245564 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, 87649 + ... + 88344.

It is an arithmetic number, because the mean of its divisors is an integer number (6159790).

Almost surely, 2^61245564 is an apocalyptic number.

It is an amenable number.

61245564 is an abundant number, since it is smaller than the sum of its proper divisors (86589396).

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

61245564 is a wasteful number, since it uses less digits than its factorization.

61245564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176029 (or 176027 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 61245564 is about 7825.9545104735. The cubic root of 61245564 is about 394.1772416672.

The spelling of 61245564 in words is "sixty-one million, two hundred forty-five thousand, five hundred sixty-four".