6450667 has 4 divisors (see below), whose sum is σ = 6830136. Its totient is φ = 6071200.

The previous prime is 6450641. The next prime is 6450679. The reversal of 6450667 is 7660546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7660546 = 2 ⋅3830273.

It is a cyclic number.

It is not a de Polignac number, because 6450667 - 2⁷ = 6450539 is a prime.

It is a super-2 number, since 2×6450667² = 83222209489778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6450637) 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, 189709 + ... + 189742.

It is an arithmetic number, because the mean of its divisors is an integer number (1707534).

Almost surely, 2^6450667 is an apocalyptic number.

6450667 is a deficient number, since it is larger than the sum of its proper divisors (379469).

6450667 is a wasteful number, since it uses less digits than its factorization.

6450667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379468.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 6450667 is about 2539.8163319421. The cubic root of 6450667 is about 186.1522147838.

It can be divided in two parts, 6450 and 667, that added together give a palindrome (7117).

The spelling of 6450667 in words is "six million, four hundred fifty thousand, six hundred sixty-seven".