1397206 has 8 divisors (see below), whose sum is σ = 2115720. Its totient is φ = 691968.

The previous prime is 1397189. The next prime is 1397219. The reversal of 1397206 is 6027931.

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

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 3 ways as a sum of consecutive naturals, for example, 3051 + ... + 3478.

It is an arithmetic number, because the mean of its divisors is an integer number (264465).

2^1397206 is an apocalyptic number.

1397206 is a deficient number, since it is larger than the sum of its proper divisors (718514).

1397206 is a wasteful number, since it uses less digits than its factorization.

1397206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6638.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 1397206 is about 1182.0346864623. The cubic root of 1397206 is about 111.7944251964.

It can be divided in two parts, 1397 and 206, that multiplied together give a palindrome (287782).

The spelling of 1397206 in words is "one million, three hundred ninety-seven thousand, two hundred six".