61639852 has 24 divisors (see below), whose sum is σ = 109222400. Its totient is φ = 30436560.

The previous prime is 61639843. The next prime is 61639937. The reversal of 61639852 is 25893616.

61639852 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 167773 + ... + 168139.

Almost surely, 2^61639852 is an apocalyptic number.

It is an amenable number.

61639852 is a deficient number, since it is larger than the sum of its proper divisors (47582548).

61639852 is a wasteful number, since it uses less digits than its factorization.

61639852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781 (or 779 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 61639852 is about 7851.1051451372. The cubic root of 61639852 is about 395.0213138101.

The spelling of 61639852 in words is "sixty-one million, six hundred thirty-nine thousand, eight hundred fifty-two".