863780642404 has 9 divisors (see below), whose sum is σ = 1511619377107. Its totient is φ = 431889391804.

The previous prime is 863780642401. The next prime is 863780642407. The reversal of 863780642404 is 404246087368.

It is a happy number.

The square root of 863780642404 is 929398.

It is a perfect power (a square), and thus also a powerful number.

863780642404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (863780642401) and next prime (863780642407).

It is a super-2 number, since 2×863780642404² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (863780642401) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1626447 + ... + 2091145.

Almost surely, 2^863780642404 is an apocalyptic number.

863780642404 is the 929398-th square number.

It is an amenable number.

863780642404 is a deficient number, since it is larger than the sum of its proper divisors (647838734703).

863780642404 is an frugal number, since it uses more digits than its factorization.

863780642404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929402 (or 464701 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 52.

The spelling of 863780642404 in words is "eight hundred sixty-three billion, seven hundred eighty million, six hundred forty-two thousand, four hundred four".