61342247 has 2 divisors, whose sum is σ = 61342248. Its totient is φ = 61342246.

The previous prime is 61342243. The next prime is 61342261. The reversal of 61342247 is 74224316.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61342247 - 2² = 61342243 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61342243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30671123 + 30671124.

It is an arithmetic number, because the mean of its divisors is an integer number (30671124).

Almost surely, 2^61342247 is an apocalyptic number.

61342247 is a deficient number, since it is larger than the sum of its proper divisors (1).

61342247 is an equidigital number, since it uses as much as digits as its factorization.

61342247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 29.

The square root of 61342247 is about 7832.1291485777. The cubic root of 61342247 is about 394.3845502981.

The spelling of 61342247 in words is "sixty-one million, three hundred forty-two thousand, two hundred forty-seven".