861611332 has 12 divisors (see below), whose sum is σ = 1539901440. Its totient is φ = 421639496.

The previous prime is 861611291. The next prime is 861611347. The reversal of 861611332 is 233116168.

It is a junction number, because it is equal to n+sod(n) for n = 861611294 and 861611303.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2291332 + ... + 2291707.

It is an arithmetic number, because the mean of its divisors is an integer number (128325120).

Almost surely, 2^861611332 is an apocalyptic number.

It is an amenable number.

861611332 is a deficient number, since it is larger than the sum of its proper divisors (678290108).

861611332 is a wasteful number, since it uses less digits than its factorization.

861611332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4583090 (or 4583088 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 861611332 is about 29353.2167232145. The cubic root of 861611332 is about 951.5620955796.

The spelling of 861611332 in words is "eight hundred sixty-one million, six hundred eleven thousand, three hundred thirty-two".