6485742564 has 48 divisors (see below), whose sum is σ = 17299261056. Its totient is φ = 1852646400.

The previous prime is 6485742559. The next prime is 6485742569. The reversal of 6485742564 is 4652475846.

It is an interprime number because it is at equal distance from previous prime (6485742559) and next prime (6485742569).

It is not an unprimeable number, because it can be changed into a prime (6485742569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 680794 + ... + 690254.

It is an arithmetic number, because the mean of its divisors is an integer number (360401272).

Almost surely, 2^6485742564 is an apocalyptic number.

It is an amenable number.

6485742564 is an abundant number, since it is smaller than the sum of its proper divisors (10813518492).

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

6485742564 is a wasteful number, since it uses less digits than its factorization.

6485742564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17636 (or 17634 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 51.

The square root of 6485742564 is about 80534.1080785030. The cubic root of 6485742564 is about 1864.8900657071.

The spelling of 6485742564 in words is "six billion, four hundred eighty-five million, seven hundred forty-two thousand, five hundred sixty-four".