65813203 has 2 divisors, whose sum is σ = 65813204. Its totient is φ = 65813202.

The previous prime is 65813183. The next prime is 65813213. The reversal of 65813203 is 30231856.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65813203 is a prime.

It is not a weakly prime, because it can be changed into another prime (65813213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32906601 + 32906602.

It is an arithmetic number, because the mean of its divisors is an integer number (32906602).

Almost surely, 2^65813203 is an apocalyptic number.

65813203 is a deficient number, since it is larger than the sum of its proper divisors (1).

65813203 is an equidigital number, since it uses as much as digits as its factorization.

65813203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 65813203 is about 8112.5336979269. The cubic root of 65813203 is about 403.7423834697.

It can be divided in two parts, 658 and 13203, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 65813203 in words is "sixty-five million, eight hundred thirteen thousand, two hundred three".