667942848 has 168 divisors, whose sum is σ = 2055296880. Its totient is φ = 214824960.

The previous prime is 667942843. The next prime is 667942861. The reversal of 667942848 is 848249766.

It is a super-2 number, since 2×667942848² = 892295296388702208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 667942794 and 667942803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667942843) 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, 450268 + ... + 451748.

It is an arithmetic number, because the mean of its divisors is an integer number (12233910).

Almost surely, 2^667942848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667942848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1027648440).

667942848 is an abundant number, since it is smaller than the sum of its proper divisors (1387354032).

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

667942848 is a wasteful number, since it uses less digits than its factorization.

667942848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537 (or 1515 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The square root of 667942848 is about 25844.5903043558. The cubic root of 667942848 is about 874.1375329685.

The spelling of 667942848 in words is "six hundred sixty-seven million, nine hundred forty-two thousand, eight hundred forty-eight".