864442061 has 12 divisors (see below), whose sum is σ = 1049468448. Its totient is φ = 697363392.

The previous prime is 864442043. The next prime is 864442067. The reversal of 864442061 is 160244468.

It is not a de Polignac number, because 864442061 - 2⁶ = 864441997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864442067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211631 + ... + 215676.

It is an arithmetic number, because the mean of its divisors is an integer number (87455704).

Almost surely, 2^864442061 is an apocalyptic number.

It is an amenable number.

864442061 is a deficient number, since it is larger than the sum of its proper divisors (185026387).

864442061 is a wasteful number, since it uses less digits than its factorization.

864442061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427348 (or 427331 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 864442061 is about 29401.3955621158. The cubic root of 864442061 is about 952.6030405448.

It can be divided in two parts, 8644 and 42061, that added together give a palindrome (50705).

The spelling of 864442061 in words is "eight hundred sixty-four million, four hundred forty-two thousand, sixty-one".