1387606 has 8 divisors (see below), whose sum is σ = 2270664. Its totient is φ = 630720.

The previous prime is 1387601. The next prime is 1387649. The reversal of 1387606 is 6067831.

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

It is a super-2 number, since 2×1387606² = 3850900822472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387601) 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, 31515 + ... + 31558.

It is an arithmetic number, because the mean of its divisors is an integer number (283833).

2^1387606 is an apocalyptic number.

1387606 is a deficient number, since it is larger than the sum of its proper divisors (883058).

1387606 is a wasteful number, since it uses less digits than its factorization.

1387606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63086.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1387606 is about 1177.9668925738. The cubic root of 1387606 is about 111.5377954410.

It can be divided in two parts, 138 and 7606, that added together give a square (7744 = 88²).

The spelling of 1387606 in words is "one million, three hundred eighty-seven thousand, six hundred six".