861473608 has 8 divisors (see below), whose sum is σ = 1615263030. Its totient is φ = 430736800.

The previous prime is 861473597. The next prime is 861473609. The reversal of 861473608 is 806374168.

It can be written as a sum of positive squares in only one way, i.e., 549527364 + 311946244 = 23442^2 + 17662^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (861473609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53842093 + ... + 53842108.

Almost surely, 2^861473608 is an apocalyptic number.

It is an amenable number.

861473608 is a deficient number, since it is larger than the sum of its proper divisors (753789422).

861473608 is a wasteful number, since it uses less digits than its factorization.

861473608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107684207 (or 107684203 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 861473608 is about 29350.8706514815. The cubic root of 861473608 is about 951.5113921605.

The spelling of 861473608 in words is "eight hundred sixty-one million, four hundred seventy-three thousand, six hundred eight".