647230547040 has 768 divisors, whose sum is σ = 2712897847296. Its totient is φ = 125566156800.

The previous prime is 647230547017. The next prime is 647230547059. The reversal of 647230547040 is 40745032746.

It is a super-3 number, since 3×647230547040³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 647230546983 and 647230547001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 79792585 + ... + 79800695.

It is an arithmetic number, because the mean of its divisors is an integer number (3532419072).

Almost surely, 2^647230547040 is an apocalyptic number.

647230547040 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 647230547040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1356448923648).

647230547040 is an abundant number, since it is smaller than the sum of its proper divisors (2065667300256).

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

647230547040 is a wasteful number, since it uses less digits than its factorization.

647230547040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8291 (or 8283 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 42.

Adding to 647230547040 its reverse (40745032746), we get a palindrome (687975579786).

The spelling of 647230547040 in words is "six hundred forty-seven billion, two hundred thirty million, five hundred forty-seven thousand, forty".