671554 has 16 divisors (see below), whose sum is σ = 1132992. Its totient is φ = 296208.

The previous prime is 671537. The next prime is 671557. The reversal of 671554 is 455176.

671554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (671557) 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, 37 + ... + 1159.

It is an arithmetic number, because the mean of its divisors is an integer number (70812).

2⁶⁷¹⁵⁵⁴ is an apocalyptic number.

671554 is a deficient number, since it is larger than the sum of its proper divisors (461438).

671554 is a wasteful number, since it uses less digits than its factorization.

671554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161.

The product of its digits is 4200, while the sum is 28.

The square root of 671554 is about 819.4839839802. The cubic root of 671554 is about 87.5710008750.

It can be divided in two parts, 671 and 554, that added together give a triangular number (1225 = T₄₉).

The spelling of 671554 in words is "six hundred seventy-one thousand, five hundred fifty-four".