6421674078 has 48 divisors (see below), whose sum is σ = 14742084240. Its totient is φ = 2013274368.

The previous prime is 6421674067. The next prime is 6421674079. The reversal of 6421674078 is 8704761246.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6421674079) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 503808 + ... + 516396.

It is an arithmetic number, because the mean of its divisors is an integer number (307126755).

Almost surely, 2^6421674078 is an apocalyptic number.

6421674078 is an abundant number, since it is smaller than the sum of its proper divisors (8320410162).

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

6421674078 is a wasteful number, since it uses less digits than its factorization.

6421674078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14281 (or 14278 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 6421674078 is about 80135.3484924100. The cubic root of 6421674078 is about 1858.7290502375.

The spelling of 6421674078 in words is "six billion, four hundred twenty-one million, six hundred seventy-four thousand, seventy-eight".