61711671 has 16 divisors (see below), whose sum is σ = 96579584. Its totient is φ = 34310304.

The previous prime is 61711667. The next prime is 61711693. The reversal of 61711671 is 17611716.

It is not a de Polignac number, because 61711671 - 2² = 61711667 is a prime.

It is a super-2 number, since 2×61711671² = 7616660675224482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61711631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38935 + ... + 40488.

It is an arithmetic number, because the mean of its divisors is an integer number (6036224).

Almost surely, 2^61711671 is an apocalyptic number.

61711671 is a deficient number, since it is larger than the sum of its proper divisors (34867913).

61711671 is a wasteful number, since it uses less digits than its factorization.

61711671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79470.

The product of its digits is 1764, while the sum is 30.

The square root of 61711671 is about 7855.6776283144. The cubic root of 61711671 is about 395.1746725199.

The spelling of 61711671 in words is "sixty-one million, seven hundred eleven thousand, six hundred seventy-one".