1679401 has 4 divisors (see below), whose sum is σ = 1720404. Its totient is φ = 1638400.

The previous prime is 1679383. The next prime is 1679417. The reversal of 1679401 is 1049761.

1679401 = T₁₆₀ + T₁₆₁ + ... + T₂₄₁.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1049761 = 503 ⋅2087.

It can be written as a sum of positive squares in 2 ways, for example, as 767376 + 912025 = 876^2 + 955^2 .

It is a 6-Lehmer number, since φ(1679401) divides (1679401-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 1679401 - 2⁷ = 1679273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1679401.

It is not an unprimeable number, because it can be changed into a prime (1679471) 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, 20440 + ... + 20521.

It is an arithmetic number, because the mean of its divisors is an integer number (430101).

2^1679401 is an apocalyptic number.

It is an amenable number.

1679401 is a deficient number, since it is larger than the sum of its proper divisors (41003).

1679401 is an equidigital number, since it uses as much as digits as its factorization.

1679401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41002.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1679401 is about 1295.9170498145. The cubic root of 1679401 is about 118.8643087676.

It can be divided in two parts, 1679 and 401, that added together give a triangular number (2080 = T₆₄).

The spelling of 1679401 in words is "one million, six hundred seventy-nine thousand, four hundred one".