61939075 has 24 divisors (see below), whose sum is σ = 88722000. Its totient is φ = 42393600.

The previous prime is 61939067. The next prime is 61939079. The reversal of 61939075 is 57093916.

61939075 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61939075 - 2³ = 61939067 is a prime.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (61939079) 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 23 ways as a sum of consecutive naturals, for example, 1950 + ... + 11299.

It is an arithmetic number, because the mean of its divisors is an integer number (3696750).

Almost surely, 2^61939075 is an apocalyptic number.

61939075 is a deficient number, since it is larger than the sum of its proper divisors (26782925).

61939075 is a wasteful number, since it uses less digits than its factorization.

61939075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13287 (or 13282 counting only the distinct ones).

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 61939075 is about 7870.1381817602. The cubic root of 61939075 is about 395.6594762508.

The spelling of 61939075 in words is "sixty-one million, nine hundred thirty-nine thousand, seventy-five".