5697881781 has 8 divisors (see below), whose sum is σ = 7615222944. Its totient is φ = 3789564240.

The previous prime is 5697881773. The next prime is 5697881821. The reversal of 5697881781 is 1871887965.

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

It is not a de Polignac number, because 5697881781 - 2³ = 5697881773 is a prime.

It is a super-2 number, since 2×5697881781² = 64931713580503463922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5697881081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2254431 + ... + 2256956.

It is an arithmetic number, because the mean of its divisors is an integer number (951902868).

Almost surely, 2^5697881781 is an apocalyptic number.

It is an amenable number.

5697881781 is a deficient number, since it is larger than the sum of its proper divisors (1917341163).

5697881781 is a wasteful number, since it uses less digits than its factorization.

5697881781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4511811.

The product of its digits is 6773760, while the sum is 60.

The square root of 5697881781 is about 75484.3148011559. The cubic root of 5697881781 is about 1786.0946849436.

The spelling of 5697881781 in words is "five billion, six hundred ninety-seven million, eight hundred eighty-one thousand, seven hundred eighty-one".