671088427 has 4 divisors (see below), whose sum is σ = 672729640. Its totient is φ = 669447216.

The previous prime is 671088349. The next prime is 671088433. The reversal of 671088427 is 724880176.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671088427 is a prime.

It is a super-3 number, since 3×671088427³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671088437) 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, 819993 + ... + 820810.

It is an arithmetic number, because the mean of its divisors is an integer number (168182410).

Almost surely, 2^671088427 is an apocalyptic number.

671088427 is a deficient number, since it is larger than the sum of its proper divisors (1641213).

671088427 is a wasteful number, since it uses less digits than its factorization.

671088427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641212.

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 671088427 is about 25905.3744809837. The cubic root of 671088427 is about 875.5075920713.

The spelling of 671088427 in words is "six hundred seventy-one million, eighty-eight thousand, four hundred twenty-seven".