6400373 has 4 divisors (see below), whose sum is σ = 7314720. Its totient is φ = 5486028.

The previous prime is 6400369. The next prime is 6400391. The reversal of 6400373 is 3730046.

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: 3730046 = 2 ⋅1865023.

It is a cyclic number.

It is not a de Polignac number, because 6400373 - 2² = 6400369 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400363) 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, 457163 + ... + 457176.

It is an arithmetic number, because the mean of its divisors is an integer number (1828680).

Almost surely, 2^6400373 is an apocalyptic number.

It is an amenable number.

6400373 is a deficient number, since it is larger than the sum of its proper divisors (914347).

6400373 is an equidigital number, since it uses as much as digits as its factorization.

6400373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914346.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 6400373 is about 2529.8958476586. The cubic root of 6400373 is about 185.6671601758.

The spelling of 6400373 in words is "six million, four hundred thousand, three hundred seventy-three".