61042805 has 8 divisors (see below), whose sum is σ = 76436352. Its totient is φ = 46710928.

The previous prime is 61042783. The next prime is 61042811. The reversal of 61042805 is 50824016.

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

It is a cyclic number.

It is not a de Polignac number, because 61042805 - 2⁸ = 61042549 is a prime.

It is a Duffinian number.

It is a zygodrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265289 + ... + 265518.

It is an arithmetic number, because the mean of its divisors is an integer number (9554544).

Almost surely, 2^61042805 is an apocalyptic number.

It is an amenable number.

61042805 is a deficient number, since it is larger than the sum of its proper divisors (15393547).

61042805 is a wasteful number, since it uses less digits than its factorization.

61042805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530835.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 61042805 is about 7812.9895046647. The cubic root of 61042805 is about 393.7417742466.

The spelling of 61042805 in words is "sixty-one million, forty-two thousand, eight hundred five".