861442704 has 30 divisors (see below), whose sum is σ = 2410843526. Its totient is φ = 287147520.

The previous prime is 861442679. The next prime is 861442723. The reversal of 861442704 is 407244168.

It can be written as a sum of positive squares in only one way, i.e., 539168400 + 322274304 = 23220^2 + 17952^2 .

It is a super-3 number, since 3×861442704³ (a number of 28 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2990977 + ... + 2991264.

Almost surely, 2^861442704 is an apocalyptic number.

It is an amenable number.

861442704 is an abundant number, since it is smaller than the sum of its proper divisors (1549400822).

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

861442704 is a wasteful number, since it uses less digits than its factorization.

861442704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5982255 (or 5982246 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 861442704 is about 29350.3441887825. The cubic root of 861442704 is about 951.5000140369.

The spelling of 861442704 in words is "eight hundred sixty-one million, four hundred forty-two thousand, seven hundred four".