877636662066 has 64 divisors (see below), whose sum is σ = 2037292819200. Its totient is φ = 279524602368.

The previous prime is 877636662047. The next prime is 877636662079. The reversal of 877636662066 is 660266636778.

It is a happy number.

877636662066 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 2×877636662066² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 877636661994 and 877636662012.

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, 773500 + ... + 1534136.

It is an arithmetic number, because the mean of its divisors is an integer number (31832700300).

Almost surely, 2^877636662066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 877636662066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1018646409600).

877636662066 is an abundant number, since it is smaller than the sum of its proper divisors (1159656157134).

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

877636662066 is a wasteful number, since it uses less digits than its factorization.

877636662066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761600 (or 761594 counting only the distinct ones).

The product of its (nonzero) digits is 109734912, while the sum is 63.

The spelling of 877636662066 in words is "eight hundred seventy-seven billion, six hundred thirty-six million, six hundred sixty-two thousand, sixty-six".