61442605 has 8 divisors (see below), whose sum is σ = 84264192. Its totient is φ = 42132048.

The previous prime is 61442603. The next prime is 61442609. The reversal of 61442605 is 50624416.

61442605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61442605 - 2¹ = 61442603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61442603) 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 7 ways as a sum of consecutive naturals, for example, 877717 + ... + 877786.

It is an arithmetic number, because the mean of its divisors is an integer number (10533024).

Almost surely, 2^61442605 is an apocalyptic number.

It is an amenable number.

61442605 is a deficient number, since it is larger than the sum of its proper divisors (22821587).

61442605 is a wasteful number, since it uses less digits than its factorization.

61442605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755515.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 61442605 is about 7838.5333449568. The cubic root of 61442605 is about 394.5995086217.

It can be divided in two parts, 6144260 and 5, that added together give a triangular number (6144265 = T₃₅₀₅).

The spelling of 61442605 in words is "sixty-one million, four hundred forty-two thousand, six hundred five".