700161561 has 48 divisors (see below), whose sum is σ = 1178191872. Its totient is φ = 396396000.

The previous prime is 700161559. The next prime is 700161563. The reversal of 700161561 is 165161007.

It is an interprime number because it is at equal distance from previous prime (700161559) and next prime (700161563).

It is not a de Polignac number, because 700161561 - 2¹ = 700161559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (700161563) 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 47 ways as a sum of consecutive naturals, for example, 94336 + ... + 101486.

It is an arithmetic number, because the mean of its divisors is an integer number (24545664).

Almost surely, 2^700161561 is an apocalyptic number.

It is an amenable number.

700161561 is a deficient number, since it is larger than the sum of its proper divisors (478030311).

700161561 is a wasteful number, since it uses less digits than its factorization.

700161561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7234 (or 7231 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 700161561 is about 26460.5661504058. The cubic root of 700161561 is about 887.9723063253.

It can be divided in two parts, 700 and 161561, that added together give a palindrome (162261).

The spelling of 700161561 in words is "seven hundred million, one hundred sixty-one thousand, five hundred sixty-one".