61186423 has 2 divisors, whose sum is σ = 61186424. Its totient is φ = 61186422.

The previous prime is 61186409. The next prime is 61186457. The reversal of 61186423 is 32468116.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61186423 - 2²¹ = 59089271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61186523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30593211 + 30593212.

It is an arithmetic number, because the mean of its divisors is an integer number (30593212).

Almost surely, 2^61186423 is an apocalyptic number.

61186423 is a deficient number, since it is larger than the sum of its proper divisors (1).

61186423 is an equidigital number, since it uses as much as digits as its factorization.

61186423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 61186423 is about 7822.1750811395. The cubic root of 61186423 is about 394.0503233926.

The spelling of 61186423 in words is "sixty-one million, one hundred eighty-six thousand, four hundred twenty-three".