61416217 has 2 divisors, whose sum is σ = 61416218. Its totient is φ = 61416216.

The previous prime is 61416193. The next prime is 61416269. The reversal of 61416217 is 71261416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61011721 + 404496 = 7811^2 + 636^2 .

It is a cyclic number.

It is not a de Polignac number, because 61416217 - 2¹⁵ = 61383449 is a prime.

It is equal to p_3641077 and since 61416217 and 3641077 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (61416317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30708108 + 30708109.

It is an arithmetic number, because the mean of its divisors is an integer number (30708109).

Almost surely, 2^61416217 is an apocalyptic number.

It is an amenable number.

61416217 is a deficient number, since it is larger than the sum of its proper divisors (1).

61416217 is an equidigital number, since it uses as much as digits as its factorization.

61416217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 28.

The square root of 61416217 is about 7836.8499411434. The cubic root of 61416217 is about 394.5430104592.

The spelling of 61416217 in words is "sixty-one million, four hundred sixteen thousand, two hundred seventeen".