2456678889 has 20 divisors (see below), whose sum is σ = 4194119424. Its totient is φ = 1403816184.

The previous prime is 2456678801. The next prime is 2456678893. The reversal of 2456678889 is 9888766542.

It is not a de Polignac number, because 2456678889 - 2⁷ = 2456678761 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (2456678489) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2165817 + ... + 2166950.

Almost surely, 2^2456678889 is an apocalyptic number.

It is an amenable number.

2456678889 is a deficient number, since it is larger than the sum of its proper divisors (1737440535).

2456678889 is an equidigital number, since it uses as much as digits as its factorization.

2456678889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4332786 (or 4332777 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 63.

The square root of 2456678889 is about 49564.8957327664. The cubic root of 2456678889 is about 1349.3236463868.

The spelling of 2456678889 in words is "two billion, four hundred fifty-six million, six hundred seventy-eight thousand, eight hundred eighty-nine".