61704823 has 2 divisors, whose sum is σ = 61704824. Its totient is φ = 61704822.

The previous prime is 61704821. The next prime is 61704827. The reversal of 61704823 is 32840716.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61704823 - 2¹ = 61704821 is a prime.

It is a super-2 number, since 2×61704823² = 7614970362922658, which contains 22 as substring.

Together with 61704821, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61704821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30852411 + 30852412.

It is an arithmetic number, because the mean of its divisors is an integer number (30852412).

Almost surely, 2^61704823 is an apocalyptic number.

61704823 is a deficient number, since it is larger than the sum of its proper divisors (1).

61704823 is an equidigital number, since it uses as much as digits as its factorization.

61704823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 61704823 is about 7855.2417531226. The cubic root of 61704823 is about 395.1600547757.

The spelling of 61704823 in words is "sixty-one million, seven hundred four thousand, eight hundred twenty-three".