6531462740 has 96 divisors (see below), whose sum is σ = 15451527168. Its totient is φ = 2298240000.

The previous prime is 6531462739. The next prime is 6531462787. The reversal of 6531462740 is 472641356.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6531462694 and 6531462703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1552640 + ... + 1556840.

It is an arithmetic number, because the mean of its divisors is an integer number (160953408).

Almost surely, 2^6531462740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6531462740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7725763584).

6531462740 is an abundant number, since it is smaller than the sum of its proper divisors (8920064428).

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

6531462740 is a wasteful number, since it uses less digits than its factorization.

6531462740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4449 (or 4447 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 6531462740 is about 80817.4655628349. The cubic root of 6531462740 is about 1869.2618875784.

The spelling of 6531462740 in words is "six billion, five hundred thirty-one million, four hundred sixty-two thousand, seven hundred forty".