61704881 has 4 divisors (see below), whose sum is σ = 70519872. Its totient is φ = 52889892.

The previous prime is 61704847. The next prime is 61704887. The reversal of 61704881 is 18840716.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61704881 - 2¹⁸ = 61442737 is a prime.

It is a super-2 number, since 2×61704881² = 7614984678448322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61704887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4407485 + ... + 4407498.

It is an arithmetic number, because the mean of its divisors is an integer number (17629968).

Almost surely, 2^61704881 is an apocalyptic number.

It is an amenable number.

61704881 is a deficient number, since it is larger than the sum of its proper divisors (8814991).

61704881 is an equidigital number, since it uses as much as digits as its factorization.

61704881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8814990.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 61704881 is about 7855.2454449240. The cubic root of 61704881 is about 395.1601785870.

The spelling of 61704881 in words is "sixty-one million, seven hundred four thousand, eight hundred eighty-one".