1178671 has 8 divisors (see below), whose sum is σ = 1288224. Its totient is φ = 1071840.

The previous prime is 1178669. The next prime is 1178689. The reversal of 1178671 is 1768711.

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 1178671 - 2¹ = 1178669 is a prime.

1178671 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1178621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285 + ... + 1561.

It is an arithmetic number, because the mean of its divisors is an integer number (161028).

2^1178671 is an apocalyptic number.

1178671 is a deficient number, since it is larger than the sum of its proper divisors (109553).

1178671 is a wasteful number, since it uses less digits than its factorization.

1178671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361.

The product of its digits is 2352, while the sum is 31.

The square root of 1178671 is about 1085.6661549482. Note that the first 3 decimals coincide. The cubic root of 1178671 is about 105.6324937787.

It can be divided in two parts, 1178 and 671, that added together give a square (1849 = 43²).

The spelling of 1178671 in words is "one million, one hundred seventy-eight thousand, six hundred seventy-one".