836140680 has 96 divisors (see below), whose sum is σ = 2805154560. Its totient is φ = 215775360.

The previous prime is 836140663. The next prime is 836140687. The reversal of 836140680 is 86041638.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (836140687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26302 + ... + 48621.

It is an arithmetic number, because the mean of its divisors is an integer number (29220360).

Almost surely, 2^836140680 is an apocalyptic number.

It is an amenable number.

836140680 is an abundant number, since it is smaller than the sum of its proper divisors (1969013880).

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

836140680 is a wasteful number, since it uses less digits than its factorization.

836140680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74971 (or 74964 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 836140680 is about 28916.0972470353. The cubic root of 836140680 is about 942.0915702023.

The spelling of 836140680 in words is "eight hundred thirty-six million, one hundred forty thousand, six hundred eighty".