68948513 has 2 divisors, whose sum is σ = 68948514. Its totient is φ = 68948512.

The previous prime is 68948497. The next prime is 68948519. The reversal of 68948513 is 31584986.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64754209 + 4194304 = 8047^2 + 2048^2 .

It is a cyclic number.

It is not a de Polignac number, because 68948513 - 2⁴ = 68948497 is a prime.

It is a super-2 number, since 2×68948513² = 9507794889822338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68948519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34474256 + 34474257.

It is an arithmetic number, because the mean of its divisors is an integer number (34474257).

Almost surely, 2^68948513 is an apocalyptic number.

It is an amenable number.

68948513 is a deficient number, since it is larger than the sum of its proper divisors (1).

68948513 is an equidigital number, since it uses as much as digits as its factorization.

68948513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 44.

The square root of 68948513 is about 8303.5241313553. The cubic root of 68948513 is about 410.0545495534.

The spelling of 68948513 in words is "sixty-eight million, nine hundred forty-eight thousand, five hundred thirteen".