65619349 has 2 divisors, whose sum is σ = 65619350. Its totient is φ = 65619348.

The previous prime is 65619287. The next prime is 65619377. The reversal of 65619349 is 94391656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63091249 + 2528100 = 7943^2 + 1590^2 .

It is a cyclic number.

It is not a de Polignac number, because 65619349 - 2¹⁵ = 65586581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65619049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32809674 + 32809675.

It is an arithmetic number, because the mean of its divisors is an integer number (32809675).

Almost surely, 2^65619349 is an apocalyptic number.

It is an amenable number.

65619349 is a deficient number, since it is larger than the sum of its proper divisors (1).

65619349 is an equidigital number, since it uses as much as digits as its factorization.

65619349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 43.

The square root of 65619349 is about 8100.5770782087. The cubic root of 65619349 is about 403.3455834147.

The spelling of 65619349 in words is "sixty-five million, six hundred nineteen thousand, three hundred forty-nine".