68645033 has 2 divisors, whose sum is σ = 68645034. Its totient is φ = 68645032.

The previous prime is 68644993. The next prime is 68645089. The reversal of 68645033 is 33054686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35617024 + 33028009 = 5968^2 + 5747^2 .

It is a cyclic number.

It is not a de Polignac number, because 68645033 - 2¹² = 68640937 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 68644984 and 68645002.

It is not a weakly prime, because it can be changed into another prime (68641033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34322516 + 34322517.

It is an arithmetic number, because the mean of its divisors is an integer number (34322517).

Almost surely, 2^68645033 is an apocalyptic number.

It is an amenable number.

68645033 is a deficient number, since it is larger than the sum of its proper divisors (1).

68645033 is an equidigital number, since it uses as much as digits as its factorization.

68645033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 68645033 is about 8285.2298097277. The cubic root of 68645033 is about 409.4520401442.

The spelling of 68645033 in words is "sixty-eight million, six hundred forty-five thousand, thirty-three".