677220766536 has 128 divisors (see below), whose sum is σ = 1766445563520. Its totient is φ = 216166938624.

The previous prime is 677220766529. The next prime is 677220766637. The reversal of 677220766536 is 635667022776.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87345636 + ... + 87353388.

It is an arithmetic number, because the mean of its divisors is an integer number (13800355965).

Almost surely, 2^677220766536 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 677220766536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (883222781760).

677220766536 is an abundant number, since it is smaller than the sum of its proper divisors (1089224796984).

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

677220766536 is a wasteful number, since it uses less digits than its factorization.

677220766536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9455 (or 9451 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 57.

The spelling of 677220766536 in words is "six hundred seventy-seven billion, two hundred twenty million, seven hundred sixty-six thousand, five hundred thirty-six".