863214720 has 64 divisors (see below), whose sum is σ = 2751503040. Its totient is φ = 230190080.

The previous prime is 863214719. The next prime is 863214727. The reversal of 863214720 is 27412368.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (863214727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222876 + ... + 226715.

It is an arithmetic number, because the mean of its divisors is an integer number (42992235).

Almost surely, 2^863214720 is an apocalyptic number.

863214720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

863214720 is an abundant number, since it is smaller than the sum of its proper divisors (1888288320).

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

863214720 is a wasteful number, since it uses less digits than its factorization.

863214720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449613 (or 449601 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 863214720 is about 29380.5159927459. The cubic root of 863214720 is about 952.1519894798.

The spelling of 863214720 in words is "eight hundred sixty-three million, two hundred fourteen thousand, seven hundred twenty".