861054612 has 96 divisors (see below), whose sum is σ = 2256508800. Its totient is φ = 253286400.

The previous prime is 861054583. The next prime is 861054647. The reversal of 861054612 is 216450168.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2105064 + ... + 2105472.

It is an arithmetic number, because the mean of its divisors is an integer number (23505300).

Almost surely, 2^861054612 is an apocalyptic number.

861054612 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 861054612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1128254400).

861054612 is an abundant number, since it is smaller than the sum of its proper divisors (1395454188).

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

861054612 is a wasteful number, since it uses less digits than its factorization.

861054612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857 (or 855 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 861054612 is about 29343.7320734770. The cubic root of 861054612 is about 951.3571045475.

The spelling of 861054612 in words is "eight hundred sixty-one million, fifty-four thousand, six hundred twelve".