1379678 has 16 divisors (see below), whose sum is σ = 2190240. Its totient is φ = 650496.

The previous prime is 1379663. The next prime is 1379681. The reversal of 1379678 is 8769731.

It is a super-2 number, since 2×1379678² = 3807022767368, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3926 + ... + 4262.

It is an arithmetic number, because the mean of its divisors is an integer number (136890).

2^1379678 is an apocalyptic number.

1379678 is a deficient number, since it is larger than the sum of its proper divisors (810562).

1379678 is a wasteful number, since it uses less digits than its factorization.

1379678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451.

The product of its digits is 63504, while the sum is 41.

The square root of 1379678 is about 1174.5969521500. The cubic root of 1379678 is about 111.3249681963.

The spelling of 1379678 in words is "one million, three hundred seventy-nine thousand, six hundred seventy-eight".