678333461220 has 36 divisors (see below), whose sum is σ = 2057611499580. Its totient is φ = 180888922944.

The previous prime is 678333461207. The next prime is 678333461243. The reversal of 678333461220 is 22164333876.

678333461220 is a `hidden beast` number, since 6 + 7 + 8 + 3 + 3 + 3 + 4 + 612 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 516811458816 + 161522002404 = 718896^2 + 401898^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×678333461220² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1884259435 + ... + 1884259794.

Almost surely, 2^678333461220 is an apocalyptic number.

678333461220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

678333461220 is an abundant number, since it is smaller than the sum of its proper divisors (1379278038360).

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

678333461220 is a wasteful number, since it uses less digits than its factorization.

678333461220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3768519244 (or 3768519239 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 678333461220 in words is "six hundred seventy-eight billion, three hundred thirty-three million, four hundred sixty-one thousand, two hundred twenty".