1087739647 has 2 divisors, whose sum is σ = 1087739648. Its totient is φ = 1087739646.

The previous prime is 1087739641. The next prime is 1087739657. The reversal of 1087739647 is 7469377801.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1087739647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1087739594 and 1087739603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1087739641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543869823 + 543869824.

It is an arithmetic number, because the mean of its divisors is an integer number (543869824).

Almost surely, 2^1087739647 is an apocalyptic number.

1087739647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087739647 is an equidigital number, since it uses as much as digits as its factorization.

1087739647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1778112, while the sum is 52.

The square root of 1087739647 is about 32980.8982139662. The cubic root of 1087739647 is about 1028.4305903955.

The spelling of 1087739647 in words is "one billion, eighty-seven million, seven hundred thirty-nine thousand, six hundred forty-seven".