247060638 has 64 divisors (see below), whose sum is σ = 618301440. Its totient is φ = 72446400.

The previous prime is 247060637. The next prime is 247060663. The reversal of 247060638 is 836060742.

247060638 is a `hidden beast` number, since 2 + 47 + 0 + 606 + 3 + 8 = 666.

It is a super-2 number, since 2×247060638² = 122077917697934088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247060631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11706 + ... + 25122.

It is an arithmetic number, because the mean of its divisors is an integer number (9660960).

Almost surely, 2^247060638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247060638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309150720).

247060638 is an abundant number, since it is smaller than the sum of its proper divisors (371240802).

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

247060638 is a wasteful number, since it uses less digits than its factorization.

247060638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13470 (or 13464 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 247060638 is about 15718.1626788884. The cubic root of 247060638 is about 627.4818758489.

The spelling of 247060638 in words is "two hundred forty-seven million, sixty thousand, six hundred thirty-eight".