6423501 has 32 divisors (see below), whose sum is σ = 10920960. Its totient is φ = 3269376.

The previous prime is 6423497. The next prime is 6423503. The reversal of 6423501 is 1053246.

It is a happy number.

It is not a de Polignac number, because 6423501 - 2² = 6423497 is a prime.

It is a super-2 number, since 2×6423501² = 82522730194002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6423503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6310 + ... + 7256.

It is an arithmetic number, because the mean of its divisors is an integer number (341280).

Almost surely, 2^6423501 is an apocalyptic number.

It is an amenable number.

6423501 is a deficient number, since it is larger than the sum of its proper divisors (4497459).

6423501 is a wasteful number, since it uses less digits than its factorization.

6423501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 6423501 is about 2534.4626649450. The cubic root of 6423501 is about 185.8905298725.

Adding to 6423501 its reverse (1053246), we get a palindrome (7476747).

The spelling of 6423501 in words is "six million, four hundred twenty-three thousand, five hundred one".