401765 has 16 divisors (see below), whose sum is σ = 594048. Its totient is φ = 254016.

The previous prime is 401743. The next prime is 401771. The reversal of 401765 is 567104.

It is a de Polignac number, because none of the positive numbers 2^k-401765 is a prime.

It is a super-2 number, since 2×401765² = 322830230450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401765.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 401765.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14 + ... + 896.

It is an arithmetic number, because the mean of its divisors is an integer number (37128).

2⁴⁰¹⁷⁶⁵ is an apocalyptic number.

It is an amenable number.

401765 is a deficient number, since it is larger than the sum of its proper divisors (192283).

401765 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 12 representation: 401765 = (174605)₁₂.

401765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 401765 is about 633.8493511869. The cubic root of 401765 is about 73.7888428919.

Adding to 401765 its reverse (567104), we get a palindrome (968869).

The spelling of 401765 in words is "four hundred one thousand, seven hundred sixty-five".