65650919 has 2 divisors, whose sum is σ = 65650920. Its totient is φ = 65650918.

The previous prime is 65650903. The next prime is 65650967. The reversal of 65650919 is 91905656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65650919 - 2⁴ = 65650903 is a prime.

It is a super-2 number, since 2×65650919² = 8620086331089122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65650969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32825459 + 32825460.

It is an arithmetic number, because the mean of its divisors is an integer number (32825460).

Almost surely, 2^65650919 is an apocalyptic number.

65650919 is a deficient number, since it is larger than the sum of its proper divisors (1).

65650919 is an equidigital number, since it uses as much as digits as its factorization.

65650919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72900, while the sum is 41.

The square root of 65650919 is about 8102.5254704938. The cubic root of 65650919 is about 403.4102573192.

The spelling of 65650919 in words is "sixty-five million, six hundred fifty thousand, nine hundred nineteen".