891401606 has 8 divisors (see below), whose sum is σ = 1407476280. Its totient is φ = 422242848.

The previous prime is 891401603. The next prime is 891401611. The reversal of 891401606 is 606104198.

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 (891401603) 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, 11728931 + ... + 11729006.

It is an arithmetic number, because the mean of its divisors is an integer number (175934535).

Almost surely, 2^891401606 is an apocalyptic number.

891401606 is a deficient number, since it is larger than the sum of its proper divisors (516074674).

891401606 is a wasteful number, since it uses less digits than its factorization.

891401606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23457958.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 891401606 is about 29856.3495089403. The cubic root of 891401606 is about 962.4048524824.

The spelling of 891401606 in words is "eight hundred ninety-one million, four hundred one thousand, six hundred six".