61894823 has 2 divisors, whose sum is σ = 61894824. Its totient is φ = 61894822.

The previous prime is 61894741. The next prime is 61894873. The reversal of 61894823 is 32849816.

61894823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61894823 - 2¹⁸ = 61632679 is a prime.

It is a super-2 number, since 2×61894823² = 7661938228402658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61894873) 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 as a sum of consecutive naturals, namely, 30947411 + 30947412.

It is an arithmetic number, because the mean of its divisors is an integer number (30947412).

Almost surely, 2^61894823 is an apocalyptic number.

61894823 is a deficient number, since it is larger than the sum of its proper divisors (1).

61894823 is an equidigital number, since it uses as much as digits as its factorization.

61894823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 41.

The square root of 61894823 is about 7867.3262929664. The cubic root of 61894823 is about 395.5652282904.

The spelling of 61894823 in words is "sixty-one million, eight hundred ninety-four thousand, eight hundred twenty-three".