764401 has 4 divisors (see below), whose sum is σ = 833904. Its totient is φ = 694900.

The previous prime is 764399. The next prime is 764431. The reversal of 764401 is 104467.

764401 = T₁₁₈ + T₁₁₉ + ... + T₁₈₃.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104467 = 11 ⋅9497.

It is a cyclic number.

It is not a de Polignac number, because 764401 - 2¹ = 764399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (764431) 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, 34735 + ... + 34756.

It is an arithmetic number, because the mean of its divisors is an integer number (208476).

2⁷⁶⁴⁴⁰¹ is an apocalyptic number.

It is an amenable number.

764401 is a deficient number, since it is larger than the sum of its proper divisors (69503).

764401 is a wasteful number, since it uses less digits than its factorization.

764401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69502.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 764401 is about 874.3002916619. The cubic root of 764401 is about 91.4338658346.

Adding to 764401 its reverse (104467), we get a palindrome (868868).

The spelling of 764401 in words is "seven hundred sixty-four thousand, four hundred one".