626708971 has 6 divisors (see below), whose sum is σ = 729028860. Its totient is φ = 537179076.

The previous prime is 626708969. The next prime is 626708983. The reversal of 626708971 is 179807626.

It is a happy number.

It is not a de Polignac number, because 626708971 - 2¹ = 626708969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (626708921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6394941 + ... + 6395038.

It is an arithmetic number, because the mean of its divisors is an integer number (121504810).

Almost surely, 2^626708971 is an apocalyptic number.

626708971 is a deficient number, since it is larger than the sum of its proper divisors (102319889).

626708971 is a wasteful number, since it uses less digits than its factorization.

626708971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12789993 (or 12789986 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 626708971 is about 25034.1560872341. The cubic root of 626708971 is about 855.7665439541.

The spelling of 626708971 in words is "six hundred twenty-six million, seven hundred eight thousand, nine hundred seventy-one".