868207680 has 448 divisors, whose sum is σ = 3397178880. Its totient is φ = 207618048.

The previous prime is 868207661. The next prime is 868207721. The reversal of 868207680 is 86702868.

It is a super-2 number, since 2×868207680² = 1507569151221964800, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3378112 + ... + 3378368.

Almost surely, 2^868207680 is an apocalyptic number.

868207680 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 868207680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1698589440).

868207680 is an abundant number, since it is smaller than the sum of its proper divisors (2528971200).

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

868207680 is a wasteful number, since it uses less digits than its factorization.

868207680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 868207680 is about 29465.3640737731. The cubic root of 868207680 is about 953.9842566921.

The spelling of 868207680 in words is "eight hundred sixty-eight million, two hundred seven thousand, six hundred eighty".