711634561 has 4 divisors (see below), whose sum is σ = 776328624. Its totient is φ = 646940500.

The previous prime is 711634541. The next prime is 711634597. The reversal of 711634561 is 165436117.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 711634561 - 2¹³ = 711626369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (711634541) 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, 32347015 + ... + 32347036.

It is an arithmetic number, because the mean of its divisors is an integer number (194082156).

Almost surely, 2^711634561 is an apocalyptic number.

It is an amenable number.

711634561 is a deficient number, since it is larger than the sum of its proper divisors (64694063).

711634561 is a wasteful number, since it uses less digits than its factorization.

711634561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64694062.

The product of its digits is 15120, while the sum is 34.

The square root of 711634561 is about 26676.4795465968. The cubic root of 711634561 is about 892.7962221876.

The spelling of 711634561 in words is "seven hundred eleven million, six hundred thirty-four thousand, five hundred sixty-one".