1396571 has 4 divisors (see below), whose sum is σ = 1523544. Its totient is φ = 1269600.

The previous prime is 1396561. The next prime is 1396579. The reversal of 1396571 is 1756931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1756931 = 11 ⋅159721.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1396571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1396579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63470 + ... + 63491.

It is an arithmetic number, because the mean of its divisors is an integer number (380886).

2^1396571 is an apocalyptic number.

1396571 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1396571 is a deficient number, since it is larger than the sum of its proper divisors (126973).

1396571 is a wasteful number, since it uses less digits than its factorization.

1396571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126972.

The product of its digits is 5670, while the sum is 32.

The square root of 1396571 is about 1181.7660512978. The cubic root of 1396571 is about 111.7774865782. Note that the first 3 decimals are identical.

The spelling of 1396571 in words is "one million, three hundred ninety-six thousand, five hundred seventy-one".