611471671 has 4 divisors (see below), whose sum is σ = 614640112. Its totient is φ = 608303232.

The previous prime is 611471659. The next prime is 611471677. The reversal of 611471671 is 176174116.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 611471671 - 2⁵ = 611471639 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 (611471677) 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, 1583931 + ... + 1584316.

It is an arithmetic number, because the mean of its divisors is an integer number (153660028).

Almost surely, 2^611471671 is an apocalyptic number.

611471671 is a deficient number, since it is larger than the sum of its proper divisors (3168441).

611471671 is a wasteful number, since it uses less digits than its factorization.

611471671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3168440.

The product of its digits is 7056, while the sum is 34.

The square root of 611471671 is about 24727.9532311107. The cubic root of 611471671 is about 848.7740902250.

The spelling of 611471671 in words is "six hundred eleven million, four hundred seventy-one thousand, six hundred seventy-one".