68925739 has 2 divisors, whose sum is σ = 68925740. Its totient is φ = 68925738.

The previous prime is 68925737. The next prime is 68925757. The reversal of 68925739 is 93752986.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68925739 - 2¹ = 68925737 is a prime.

It is a super-2 number, since 2×68925739² = 9501514993392242, which contains 22 as substring.

Together with 68925737, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 68925692 and 68925701.

It is not a weakly prime, because it can be changed into another prime (68925737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34462869 + 34462870.

It is an arithmetic number, because the mean of its divisors is an integer number (34462870).

Almost surely, 2^68925739 is an apocalyptic number.

68925739 is a deficient number, since it is larger than the sum of its proper divisors (1).

68925739 is an equidigital number, since it uses as much as digits as its factorization.

68925739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 49.

The square root of 68925739 is about 8302.1526726506. The cubic root of 68925739 is about 410.0093969688.

The spelling of 68925739 in words is "sixty-eight million, nine hundred twenty-five thousand, seven hundred thirty-nine".