401701806 has 96 divisors (see below), whose sum is σ = 1014114816. Its totient is φ = 113568000.

The previous prime is 401701777. The next prime is 401701837. The reversal of 401701806 is 608107104.

It is a happy number.

It is a super-2 number, since 2×401701806² = 322728681887323272, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 401701806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 440491 + ... + 441401.

It is an arithmetic number, because the mean of its divisors is an integer number (10563696).

Almost surely, 2^401701806 is an apocalyptic number.

It is a pronic number, being equal to 20042×20043.

It is a practical number, because each smaller number is the sum of distinct divisors of 401701806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (507057408).

401701806 is an abundant number, since it is smaller than the sum of its proper divisors (612413010).

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

401701806 is a wasteful number, since it uses less digits than its factorization.

401701806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 401701806 is about 20042.4999937633. The cubic root of 401701806 is about 737.8497391660.

It can be divided in two parts, 401 and 701806, that added together give a palindrome (702207).

The spelling of 401701806 in words is "four hundred one million, seven hundred one thousand, eight hundred six".