1556398 has 8 divisors (see below), whose sum is σ = 2378808. Its totient is φ = 763464.

The previous prime is 1556393. The next prime is 1556413. The reversal of 1556398 is 8936551.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1556393) 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, 7236 + ... + 7447.

It is an arithmetic number, because the mean of its divisors is an integer number (297351).

2^1556398 is an apocalyptic number.

1556398 is a deficient number, since it is larger than the sum of its proper divisors (822410).

1556398 is a wasteful number, since it uses less digits than its factorization.

1556398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14738.

The product of its digits is 32400, while the sum is 37.

The square root of 1556398 is about 1247.5568123336. The cubic root of 1556398 is about 115.8884679071. Note that the first 3 decimals are identical.

The spelling of 1556398 in words is "one million, five hundred fifty-six thousand, three hundred ninety-eight".