678742416 has 200 divisors, whose sum is σ = 2190824064. Its totient is φ = 201104640.

The previous prime is 678742373. The next prime is 678742423. The reversal of 678742416 is 614247876.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 669526 + ... + 670538.

Almost surely, 2^678742416 is an apocalyptic number.

678742416 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678742416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1095412032).

678742416 is an abundant number, since it is smaller than the sum of its proper divisors (1512081648).

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

678742416 is a wasteful number, since it uses less digits than its factorization.

678742416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091 (or 1076 counting only the distinct ones).

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

The square root of 678742416 is about 26052.6853894181. The cubic root of 678742416 is about 878.8235035678.

The spelling of 678742416 in words is "six hundred seventy-eight million, seven hundred forty-two thousand, four hundred sixteen".