710561991 has 4 divisors (see below), whose sum is σ = 947415992. Its totient is φ = 473707992.

The previous prime is 710561989. The next prime is 710561993. The reversal of 710561991 is 199165017.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (710561989) and next prime (710561993).

It is not a de Polignac number, because 710561991 - 2¹ = 710561989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (710561993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118426996 + ... + 118427001.

It is an arithmetic number, because the mean of its divisors is an integer number (236853998).

Almost surely, 2^710561991 is an apocalyptic number.

710561991 is a deficient number, since it is larger than the sum of its proper divisors (236854001).

710561991 is a wasteful number, since it uses less digits than its factorization.

710561991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236854000.

The product of its (nonzero) digits is 17010, while the sum is 39.

The square root of 710561991 is about 26656.3686761719. The cubic root of 710561991 is about 892.3474581784.

It can be divided in two parts, 7105 and 61991, that added together give a palindrome (69096).

The spelling of 710561991 in words is "seven hundred ten million, five hundred sixty-one thousand, nine hundred ninety-one".