61394219 has 2 divisors, whose sum is σ = 61394220. Its totient is φ = 61394218.

The previous prime is 61394209. The next prime is 61394231. The reversal of 61394219 is 91249316.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61394219 - 2⁸ = 61393963 is a prime.

It is a super-2 number, since 2×61394219² = 7538500253239922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61394209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30697109 + 30697110.

It is an arithmetic number, because the mean of its divisors is an integer number (30697110).

Almost surely, 2^61394219 is an apocalyptic number.

61394219 is a deficient number, since it is larger than the sum of its proper divisors (1).

61394219 is an equidigital number, since it uses as much as digits as its factorization.

61394219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 35.

The square root of 61394219 is about 7835.4463178558. The cubic root of 61394219 is about 394.4958991586.

The spelling of 61394219 in words is "sixty-one million, three hundred ninety-four thousand, two hundred nineteen".