671426559 has 12 divisors (see below), whose sum is σ = 975198952. Its totient is φ = 445143600.

The previous prime is 671426527. The next prime is 671426633. The reversal of 671426559 is 955624176.

671426559 is a `hidden beast` number, since 6 + 71 + 4 + 26 + 559 = 666.

It is not a de Polignac number, because 671426559 - 2⁵ = 671426527 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 (671426519) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204457 + ... + 207714.

Almost surely, 2^671426559 is an apocalyptic number.

671426559 is a deficient number, since it is larger than the sum of its proper divisors (303772393).

671426559 is a wasteful number, since it uses less digits than its factorization.

671426559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412358 (or 412355 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 671426559 is about 25911.8999496370. The cubic root of 671426559 is about 875.6546106633.

The spelling of 671426559 in words is "six hundred seventy-one million, four hundred twenty-six thousand, five hundred fifty-nine".