677880695448 has 256 divisors, whose sum is σ = 2169770803200. Its totient is φ = 194168016000.

The previous prime is 677880695381. The next prime is 677880695473. The reversal of 677880695448 is 844596088776.

677880695448 is a `hidden beast` number, since 6 + 7 + 78 + 8 + 0 + 6 + 9 + 544 + 8 = 666.

677880695448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×677880695448² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3060193 + ... + 3274223.

It is an arithmetic number, because the mean of its divisors is an integer number (8475667200).

Almost surely, 2^677880695448 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 677880695448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1084885401600).

677880695448 is an abundant number, since it is smaller than the sum of its proper divisors (1491890107752).

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

677880695448 is a wasteful number, since it uses less digits than its factorization.

677880695448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214131 (or 214121 counting only the distinct ones).

The product of its (nonzero) digits is 650280960, while the sum is 72.

The spelling of 677880695448 in words is "six hundred seventy-seven billion, eight hundred eighty million, six hundred ninety-five thousand, four hundred forty-eight".