677574220019823 has 72 divisors (see below), whose sum is σ = 1165588764479568. Its totient is φ = 377985294989568.

The previous prime is 677574220019819. The next prime is 677574220019867. The reversal of 677574220019823 is 328910022475776.

It is a happy number.

677574220019823 is a `hidden beast` number, since 6 + 7 + 7 + 574 + 2 + 20 + 0 + 19 + 8 + 23 = 666.

It is not a de Polignac number, because 677574220019823 - 2² = 677574220019819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677574220019023) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 27413011 + ... + 45897947.

It is an arithmetic number, because the mean of its divisors is an integer number (16188732839994).

It is a 1-persistent number, because it is pandigital, but 2⋅677574220019823 = 1355148440039646 is not.

Almost surely, 2^{677574220019823} is an apocalyptic number.

677574220019823 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

677574220019823 is a deficient number, since it is larger than the sum of its proper divisors (488014544459745).

677574220019823 is a wasteful number, since it uses less digits than its factorization.

677574220019823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18486933 (or 18486923 counting only the distinct ones).

The product of its (nonzero) digits is 71124480, while the sum is 63.

The spelling of 677574220019823 in words is "six hundred seventy-seven trillion, five hundred seventy-four billion, two hundred twenty million, nineteen thousand, eight hundred twenty-three".