1063687381 has 8 divisors (see below), whose sum is σ = 1074072384. Its totient is φ = 1053336960.

The previous prime is 1063687379. The next prime is 1063687421. The reversal of 1063687381 is 1837863601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1063687381 - 2¹ = 1063687379 is a prime.

It is a super-2 number, since 2×1063687381² = 2262861688997278322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1063687181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55461 + ... + 72133.

It is an arithmetic number, because the mean of its divisors is an integer number (134259048).

Almost surely, 2^1063687381 is an apocalyptic number.

It is an amenable number.

1063687381 is a deficient number, since it is larger than the sum of its proper divisors (10385003).

1063687381 is a wasteful number, since it uses less digits than its factorization.

1063687381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17291.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 1063687381 is about 32614.2205333808. The cubic root of 1063687381 is about 1020.7937500257.

The spelling of 1063687381 in words is "one billion, sixty-three million, six hundred eighty-seven thousand, three hundred eighty-one".