1398606 has 16 divisors (see below), whose sum is σ = 3051648. Its totient is φ = 423800.

The previous prime is 1398599. The next prime is 1398611. The reversal of 1398606 is 6068931.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10530 + ... + 10661.

It is an arithmetic number, because the mean of its divisors is an integer number (190728).

2^1398606 is an apocalyptic number.

1398606 is an abundant number, since it is smaller than the sum of its proper divisors (1653042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1398606 is a wasteful number, since it uses less digits than its factorization.

1398606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21207.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1398606 is about 1182.6267373943. The cubic root of 1398606 is about 111.8317520591.

It can be divided in two parts, 139860 and 6, that multiplied together give a triangular number (839160 = T₁₂₉₅).

The spelling of 1398606 in words is "one million, three hundred ninety-eight thousand, six hundred six".