1967871 has 8 divisors (see below), whose sum is σ = 2630320. Its totient is φ = 1308672.

The previous prime is 1967851. The next prime is 1967891. The reversal of 1967871 is 1787691.

It is an interprime number because it is at equal distance from previous prime (1967851) and next prime (1967891).

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

It is not a de Polignac number, because 1967871 - 2¹⁰ = 1966847 is a prime.

It is a Duffinian number.

1967871 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1967821) 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, 1881 + ... + 2733.

It is an arithmetic number, because the mean of its divisors is an integer number (328790).

2^1967871 is an apocalyptic number.

1967871 is a deficient number, since it is larger than the sum of its proper divisors (662449).

1967871 is an equidigital number, since it uses as much as digits as its factorization.

1967871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625.

The product of its digits is 21168, while the sum is 39.

The square root of 1967871 is about 1402.8082548944. The cubic root of 1967871 is about 125.3137929461.

The spelling of 1967871 in words is "one million, nine hundred sixty-seven thousand, eight hundred seventy-one".