7857963 has 12 divisors (see below), whose sum is σ = 11948040. Its totient is φ = 4962816.

The previous prime is 7857953. The next prime is 7857979. The reversal of 7857963 is 3697587.

It is a happy number.

7857963 is a `hidden beast` number, since 78 + 579 + 6 + 3 = 666.

It is not a de Polignac number, because 7857963 - 2⁴ = 7857947 is a prime.

7857963 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7857943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22806 + ... + 23147.

It is an arithmetic number, because the mean of its divisors is an integer number (995670).

Almost surely, 2^7857963 is an apocalyptic number.

7857963 is a deficient number, since it is larger than the sum of its proper divisors (4090077).

7857963 is a wasteful number, since it uses less digits than its factorization.

7857963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45978 (or 45975 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 7857963 is about 2803.2058433158. The cubic root of 7857963 is about 198.8092833713.

The spelling of 7857963 in words is "seven million, eight hundred fifty-seven thousand, nine hundred sixty-three".