866604096000 has 960 divisors, whose sum is σ = 3274418923776. Its totient is φ = 228427776000.

The previous prime is 866604095989. The next prime is 866604096013. The reversal of 866604096000 is 690406668.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1601855730 + ... + 1601856270.

Almost surely, 2^866604096000 is an apocalyptic number.

866604096000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 866604096000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1637209461888).

866604096000 is an abundant number, since it is smaller than the sum of its proper divisors (2407814827776).

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

866604096000 is an equidigital number, since it uses as much as digits as its factorization.

866604096000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 866604096000 in words is "eight hundred sixty-six billion, six hundred four million, ninety-six thousand".