6540400062 has 48 divisors (see below), whose sum is σ = 16199924832. Its totient is φ = 1868149440.

The previous prime is 6540399997. The next prime is 6540400079. The reversal of 6540400062 is 2600040456.

It is a happy number.

6540400062 is a `hidden beast` number, since 654 + 0 + 4 + 0 + 0 + 0 + 6 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 6540399999 and 6540400035.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 695512 + ... + 704852.

It is an arithmetic number, because the mean of its divisors is an integer number (337498434).

Almost surely, 2^6540400062 is an apocalyptic number.

6540400062 is an abundant number, since it is smaller than the sum of its proper divisors (9659524770).

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

6540400062 is a wasteful number, since it uses less digits than its factorization.

6540400062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14913 (or 14910 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 6540400062 is about 80872.7399189616. The cubic root of 6540400062 is about 1870.1141000089.

The spelling of 6540400062 in words is "six billion, five hundred forty million, four hundred thousand, sixty-two".