67520797 has 2 divisors, whose sum is σ = 67520798. Its totient is φ = 67520796.

The previous prime is 67520773. The next prime is 67520863. The reversal of 67520797 is 79702576.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49364676 + 18156121 = 7026^2 + 4261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67520797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67520767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33760398 + 33760399.

It is an arithmetic number, because the mean of its divisors is an integer number (33760399).

Almost surely, 2^67520797 is an apocalyptic number.

It is an amenable number.

67520797 is a deficient number, since it is larger than the sum of its proper divisors (1).

67520797 is an equidigital number, since it uses as much as digits as its factorization.

67520797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 185220, while the sum is 43.

The square root of 67520797 is about 8217.1039302178. The cubic root of 67520797 is about 407.2044543015.

The spelling of 67520797 in words is "sixty-seven million, five hundred twenty thousand, seven hundred ninety-seven".