68764937 has 2 divisors, whose sum is σ = 68764938. Its totient is φ = 68764936.

The previous prime is 68764897. The next prime is 68764957. The reversal of 68764937 is 73946786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63616576 + 5148361 = 7976^2 + 2269^2 .

It is a cyclic number.

It is not a de Polignac number, because 68764937 - 2¹² = 68760841 is a prime.

It is a super-2 number, since 2×68764937² = 9457233121227938, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68764957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34382468 + 34382469.

It is an arithmetic number, because the mean of its divisors is an integer number (34382469).

Almost surely, 2^68764937 is an apocalyptic number.

It is an amenable number.

68764937 is a deficient number, since it is larger than the sum of its proper divisors (1).

68764937 is an equidigital number, since it uses as much as digits as its factorization.

68764937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 50.

The square root of 68764937 is about 8292.4626619600. The cubic root of 68764937 is about 409.6903015200.

The spelling of 68764937 in words is "sixty-eight million, seven hundred sixty-four thousand, nine hundred thirty-seven".