765401 has 12 divisors (see below), whose sum is σ = 948672. Its totient is φ = 604656.

The previous prime is 765389. The next prime is 765409. The reversal of 765401 is 104567.

It is a de Polignac number, because none of the positive numbers 2^k-765401 is a prime.

It is a super-3 number, since 3×765401³ = 1345204559333328603, which contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (765409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 860 + ... + 1506.

It is an arithmetic number, because the mean of its divisors is an integer number (79056).

2⁷⁶⁵⁴⁰¹ is an apocalyptic number.

It is an amenable number.

765401 is a deficient number, since it is larger than the sum of its proper divisors (183271).

765401 is a wasteful number, since it uses less digits than its factorization.

765401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680 (or 667 counting only the distinct ones).

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

The square root of 765401 is about 874.8719906363. The cubic root of 765401 is about 91.4737201445.

Adding to 765401 its reverse (104567), we get a palindrome (869968).

The spelling of 765401 in words is "seven hundred sixty-five thousand, four hundred one".