671377 has 4 divisors (see below), whose sum is σ = 767296. Its totient is φ = 575460.

The previous prime is 671369. The next prime is 671383. The reversal of 671377 is 773176.

It is a happy number.

671377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 671377 - 2³ = 671369 is a prime.

It is a super-2 number, since 2×671377² = 901494152258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671357) 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, 47949 + ... + 47962.

It is an arithmetic number, because the mean of its divisors is an integer number (191824).

2⁶⁷¹³⁷⁷ is an apocalyptic number.

It is an amenable number.

671377 is a deficient number, since it is larger than the sum of its proper divisors (95919).

671377 is an equidigital number, since it uses as much as digits as its factorization.

671377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95918.

The product of its digits is 6174, while the sum is 31.

The square root of 671377 is about 819.3759820742. The cubic root of 671377 is about 87.5633065674.

It can be divided in two parts, 67 and 1377, that added together give a square (1444 = 38²).

The spelling of 671377 in words is "six hundred seventy-one thousand, three hundred seventy-seven".