6458678678 has 4 divisors (see below), whose sum is σ = 9688018020. Its totient is φ = 3229339338.

The previous prime is 6458678669. The next prime is 6458678701. The reversal of 6458678678 is 8768768546.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1614669668 + ... + 1614669671.

It is an arithmetic number, because the mean of its divisors is an integer number (2422004505).

Almost surely, 2^6458678678 is an apocalyptic number.

6458678678 is a deficient number, since it is larger than the sum of its proper divisors (3229339342).

6458678678 is a wasteful number, since it uses less digits than its factorization.

6458678678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229339341.

The product of its digits is 108380160, while the sum is 65.

The square root of 6458678678 is about 80365.9049473096. The cubic root of 6458678678 is about 1862.2924943243.

The spelling of 6458678678 in words is "six billion, four hundred fifty-eight million, six hundred seventy-eight thousand, six hundred seventy-eight".