6432981 has 8 divisors (see below), whose sum is σ = 8739360. Its totient is φ = 4207632.

The previous prime is 6432961. The next prime is 6432989. The reversal of 6432981 is 1892346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6432981 - 2⁵ = 6432949 is a prime.

It is a super-2 number, since 2×6432981² = 82766489092722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6432989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20071 + ... + 20388.

It is an arithmetic number, because the mean of its divisors is an integer number (1092420).

Almost surely, 2^6432981 is an apocalyptic number.

It is an amenable number.

6432981 is a deficient number, since it is larger than the sum of its proper divisors (2306379).

6432981 is a wasteful number, since it uses less digits than its factorization.

6432981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40515.

The product of its digits is 10368, while the sum is 33.

The square root of 6432981 is about 2536.3321943310. The cubic root of 6432981 is about 185.9819325727.

The spelling of 6432981 in words is "six million, four hundred thirty-two thousand, nine hundred eighty-one".