861377016 has 32 divisors (see below), whose sum is σ = 2154805200. Its totient is φ = 286944000.

The previous prime is 861377003. The next prime is 861377039. The reversal of 861377016 is 610773168.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 30516 + ... + 51516.

Almost surely, 2^861377016 is an apocalyptic number.

It is an amenable number.

861377016 is an abundant number, since it is smaller than the sum of its proper divisors (1293428184).

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

861377016 is a wasteful number, since it uses less digits than its factorization.

861377016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22719 (or 22715 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 861377016 is about 29349.2251345755. The cubic root of 861377016 is about 951.4758283612.

The spelling of 861377016 in words is "eight hundred sixty-one million, three hundred seventy-seven thousand, sixteen".