61339823 has 2 divisors, whose sum is σ = 61339824. Its totient is φ = 61339822.

The previous prime is 61339819. The next prime is 61339829. The reversal of 61339823 is 32893316.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61339823 - 2² = 61339819 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61339829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30669911 + 30669912.

It is an arithmetic number, because the mean of its divisors is an integer number (30669912).

Almost surely, 2^61339823 is an apocalyptic number.

61339823 is a deficient number, since it is larger than the sum of its proper divisors (1).

61339823 is an equidigital number, since it uses as much as digits as its factorization.

61339823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 35.

The square root of 61339823 is about 7831.9743998560. The cubic root of 61339823 is about 394.3793553969.

The spelling of 61339823 in words is "sixty-one million, three hundred thirty-nine thousand, eight hundred twenty-three".