671534577 has 32 divisors (see below), whose sum is σ = 1139189760. Its totient is φ = 382991760.

The previous prime is 671534467. The next prime is 671534581. The reversal of 671534577 is 775435176.

671534577 is a `hidden beast` number, since 6 + 71 + 5 + 3 + 4 + 577 = 666.

It is not a de Polignac number, because 671534577 - 2¹¹ = 671532529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671534597) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103252 + ... + 109562.

It is an arithmetic number, because the mean of its divisors is an integer number (35599680).

Almost surely, 2^671534577 is an apocalyptic number.

It is an amenable number.

671534577 is a deficient number, since it is larger than the sum of its proper divisors (467655183).

671534577 is a wasteful number, since it uses less digits than its factorization.

671534577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6890 (or 6884 counting only the distinct ones).

The product of its digits is 617400, while the sum is 45.

The square root of 671534577 is about 25913.9841977261. The cubic root of 671534577 is about 875.7015661030.

The spelling of 671534577 in words is "six hundred seventy-one million, five hundred thirty-four thousand, five hundred seventy-seven".