626680073 has 2 divisors, whose sum is σ = 626680074. Its totient is φ = 626680072.

The previous prime is 626680051. The next prime is 626680181. The reversal of 626680073 is 370086626.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 362064784 + 264615289 = 19028^2 + 16267^2 .

It is a cyclic number.

It is not a de Polignac number, because 626680073 - 2¹² = 626675977 is a prime.

It is not a weakly prime, because it can be changed into another prime (626680013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313340036 + 313340037.

It is an arithmetic number, because the mean of its divisors is an integer number (313340037).

Almost surely, 2^626680073 is an apocalyptic number.

It is an amenable number.

626680073 is a deficient number, since it is larger than the sum of its proper divisors (1).

626680073 is an equidigital number, since it uses as much as digits as its factorization.

626680073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 626680073 is about 25033.5789091372. The cubic root of 626680073 is about 855.7533904156.

The spelling of 626680073 in words is "six hundred twenty-six million, six hundred eighty thousand, seventy-three".