1679381 has 4 divisors (see below), whose sum is σ = 1832064. Its totient is φ = 1526700.

The previous prime is 1679371. The next prime is 1679383. The reversal of 1679381 is 1839761.

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 a de Polignac number, because none of the positive numbers 2^k-1679381 is a prime.

It is a super-2 number, since 2×1679381² = 5640641086322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1679383) 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, 76325 + ... + 76346.

It is an arithmetic number, because the mean of its divisors is an integer number (458016).

2^1679381 is an apocalyptic number.

1679381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1679381 is a deficient number, since it is larger than the sum of its proper divisors (152683).

1679381 is a wasteful number, since it uses less digits than its factorization.

1679381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152682.

The product of its digits is 9072, while the sum is 35.

The square root of 1679381 is about 1295.9093332483. The cubic root of 1679381 is about 118.8638369137.

It can be divided in two parts, 16 and 79381, that added together give a palindrome (79397).

The spelling of 1679381 in words is "one million, six hundred seventy-nine thousand, three hundred eighty-one".