6678432 has 36 divisors (see below), whose sum is σ = 18992610. Its totient is φ = 2226048.

The previous prime is 6678431. The next prime is 6678437. The reversal of 6678432 is 2348766.

It can be written as a sum of positive squares in only one way, i.e., 5588496 + 1089936 = 2364^2 + 1044^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×6678432³ (a number of 21 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6678431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11307 + ... + 11882.

Almost surely, 2^6678432 is an apocalyptic number.

It is an amenable number.

6678432 is an abundant number, since it is smaller than the sum of its proper divisors (12314178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6678432 is a wasteful number, since it uses less digits than its factorization.

6678432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23205 (or 23194 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 6678432 is about 2584.2662401541. The cubic root of 6678432 is about 188.3178567350.

The spelling of 6678432 in words is "six million, six hundred seventy-eight thousand, four hundred thirty-two".