671875951 has 4 divisors (see below), whose sum is σ = 686171232. Its totient is φ = 657580672.

The previous prime is 671875949. The next prime is 671875957. The reversal of 671875951 is 159578176.

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 671875951 - 2¹ = 671875949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 671875895 and 671875904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671875957) 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, 7147570 + ... + 7147663.

It is an arithmetic number, because the mean of its divisors is an integer number (171542808).

Almost surely, 2^671875951 is an apocalyptic number.

671875951 is a deficient number, since it is larger than the sum of its proper divisors (14295281).

671875951 is a wasteful number, since it uses less digits than its factorization.

671875951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14295280.

The product of its digits is 529200, while the sum is 49.

The square root of 671875951 is about 25920.5700361701. The cubic root of 671875951 is about 875.8499283345.

The spelling of 671875951 in words is "six hundred seventy-one million, eight hundred seventy-five thousand, nine hundred fifty-one".