6863920 has 120 divisors (see below), whose sum is σ = 19846944. Its totient is φ = 2193408.

The previous prime is 6863897. The next prime is 6863939. The reversal of 6863920 is 293686.

It is a happy number.

It is a super-2 number, since 2×6863920² = 94226795532800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66589 + ... + 66691.

Almost surely, 2^6863920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6863920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9923472).

6863920 is an abundant number, since it is smaller than the sum of its proper divisors (12983024).

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

6863920 is a wasteful number, since it uses less digits than its factorization.

6863920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 6863920 is about 2619.9083953452. The cubic root of 6863920 is about 190.0454185050.

The spelling of 6863920 in words is "six million, eight hundred sixty-three thousand, nine hundred twenty".