671554939 has 8 divisors (see below), whose sum is σ = 734103360. Its totient is φ = 609256200.

The previous prime is 671554907. The next prime is 671554979. The reversal of 671554939 is 939455176.

671554939 = 10577² + 10578² + ... + 10582².

671554939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 671554939 - 2⁵ = 671554907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 671554892 and 671554901.

It is not an unprimeable number, because it can be changed into a prime (671554979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56769 + ... + 67570.

It is an arithmetic number, because the mean of its divisors is an integer number (91762920).

Almost surely, 2^671554939 is an apocalyptic number.

671554939 is a deficient number, since it is larger than the sum of its proper divisors (62548421).

671554939 is a wasteful number, since it uses less digits than its factorization.

671554939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124841.

The product of its digits is 1020600, while the sum is 49.

The square root of 671554939 is about 25914.3770714250. The cubic root of 671554939 is about 875.7104169032.

The spelling of 671554939 in words is "six hundred seventy-one million, five hundred fifty-four thousand, nine hundred thirty-nine".