6491430 has 96 divisors (see below), whose sum is σ = 18869760. Its totient is φ = 1535040.

The previous prime is 6491417. The next prime is 6491449. The reversal of 6491430 is 341946.

6491430 is a `hidden beast` number, since 649 + 14 + 3 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 6491394 and 6491403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78169 + ... + 78251.

It is an arithmetic number, because the mean of its divisors is an integer number (196560).

Almost surely, 2^6491430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6491430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9434880).

6491430 is an abundant number, since it is smaller than the sum of its proper divisors (12378330).

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

6491430 is a wasteful number, since it uses less digits than its factorization.

6491430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 6491430 is about 2547.8284871631. The cubic root of 6491430 is about 186.5435022279.

The spelling of 6491430 in words is "six million, four hundred ninety-one thousand, four hundred thirty".