863438657796 has 675 divisors, whose sum is σ = 2835838310613. Its totient is φ = 228809655360.

The previous prime is 863438657791. The next prime is 863438657801. The reversal of 863438657796 is 697756834368.

The square root of 863438657796 is 929214.

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

863438657796 is a `hidden beast` number, since 8 + 6 + 3 + 43 + 8 + 6 + 577 + 9 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (863438657791) and next prime (863438657801).

It can be written as a sum of positive squares in only one way, i.e., 127727612100 + 735711045696 = 357390^2 + 857736^2 .

Its product of digits (1097349120) is a multiple of the sum of its prime divisors (48).

It is not an unprimeable number, because it can be changed into a prime (863438657791) by changing a digit.

It is a polite number, since it can be written in 224 ways as a sum of consecutive naturals, for example, 45444139875 + ... + 45444139893.

Almost surely, 2^863438657796 is an apocalyptic number.

863438657796 is the 929214-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 863438657796

863438657796 is an abundant number, since it is smaller than the sum of its proper divisors (1972399652817).

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

863438657796 is a wasteful number, since it uses less digits than its factorization.

863438657796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 48 counting only the distinct ones).

The product of its digits is 1097349120, while the sum is 72.

The spelling of 863438657796 in words is "eight hundred sixty-three billion, four hundred thirty-eight million, six hundred fifty-seven thousand, seven hundred ninety-six".