65894197 has 2 divisors, whose sum is σ = 65894198. Its totient is φ = 65894196.

The previous prime is 65894113. The next prime is 65894233. The reversal of 65894197 is 79149856.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61058596 + 4835601 = 7814^2 + 2199^2 .

It is a cyclic number.

It is not a de Polignac number, because 65894197 - 2¹¹ = 65892149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65894197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65894797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32947098 + 32947099.

It is an arithmetic number, because the mean of its divisors is an integer number (32947099).

Almost surely, 2^65894197 is an apocalyptic number.

It is an amenable number.

65894197 is a deficient number, since it is larger than the sum of its proper divisors (1).

65894197 is an equidigital number, since it uses as much as digits as its factorization.

65894197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 49.

The square root of 65894197 is about 8117.5240683351. The cubic root of 65894197 is about 403.9079394359.

The spelling of 65894197 in words is "sixty-five million, eight hundred ninety-four thousand, one hundred ninety-seven".