861076650 has 48 divisors (see below), whose sum is σ = 2440540224. Its totient is φ = 196817280.

The previous prime is 861076649. The next prime is 861076651. The reversal of 861076650 is 56670168.

It is an interprime number because it is at equal distance from previous prime (861076649) and next prime (861076651).

It is a junction number, because it is equal to n+sod(n) for n = 861076599 and 861076608.

It is not an unprimeable number, because it can be changed into a prime (861076651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 408987 + ... + 411086.

It is an arithmetic number, because the mean of its divisors is an integer number (50844588).

Almost surely, 2^861076650 is an apocalyptic number.

861076650 is an abundant number, since it is smaller than the sum of its proper divisors (1579463574).

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

861076650 is a wasteful number, since it uses less digits than its factorization.

861076650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820095 (or 820090 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 861076650 is about 29344.1075856806. The cubic root of 861076650 is about 951.3652208848.

The spelling of 861076650 in words is "eight hundred sixty-one million, seventy-six thousand, six hundred fifty".