6502464540 has 240 divisors, whose sum is σ = 23965492320. Its totient is φ = 1455045120.

The previous prime is 6502464473. The next prime is 6502464541. The reversal of 6502464540 is 454642056.

6502464540 is a `hidden beast` number, since 6 + 5 + 0 + 2 + 4 + 645 + 4 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 6502464495 and 6502464504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6502464541) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 217626 + ... + 245694.

It is an arithmetic number, because the mean of its divisors is an integer number (99856218).

Almost surely, 2^6502464540 is an apocalyptic number.

6502464540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6502464540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11982746160).

6502464540 is an abundant number, since it is smaller than the sum of its proper divisors (17463027780).

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

6502464540 is a wasteful number, since it uses less digits than its factorization.

6502464540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28114 (or 28103 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The square root of 6502464540 is about 80637.8604626884. The cubic root of 6502464540 is about 1866.4914184258.

The spelling of 6502464540 in words is "six billion, five hundred two million, four hundred sixty-four thousand, five hundred forty".