861577104 has 40 divisors (see below), whose sum is σ = 2228553792. Its totient is φ = 286829440.

The previous prime is 861577103. The next prime is 861577117. The reversal of 861577104 is 401775168.

It is a super-2 number, since 2×861577104² = 1484630212274053632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (861577103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28477 + ... + 50339.

Almost surely, 2^861577104 is an apocalyptic number.

It is an amenable number.

861577104 is an abundant number, since it is smaller than the sum of its proper divisors (1366976688).

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

861577104 is a wasteful number, since it uses less digits than its factorization.

861577104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22695 (or 22689 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 861577104 is about 29352.6336808130. The cubic root of 861577104 is about 951.5494949644.

The spelling of 861577104 in words is "eight hundred sixty-one million, five hundred seventy-seven thousand, one hundred four".