671437614247 has 4 divisors (see below), whose sum is σ = 671821953496. Its totient is φ = 671053275000.

The previous prime is 671437614223. The next prime is 671437614329. The reversal of 671437614247 is 742416734176.

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 671437614247 - 2⁷ = 671437614119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 671437614194 and 671437614203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671437614047) 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, 192167004 + ... + 192170497.

It is an arithmetic number, because the mean of its divisors is an integer number (167955488374).

Almost surely, 2^671437614247 is an apocalyptic number.

671437614247 is a deficient number, since it is larger than the sum of its proper divisors (384339249).

671437614247 is a wasteful number, since it uses less digits than its factorization.

671437614247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384339248.

The product of its digits is 4741632, while the sum is 52.

The spelling of 671437614247 in words is "six hundred seventy-one billion, four hundred thirty-seven million, six hundred fourteen thousand, two hundred forty-seven".