860736821 has 16 divisors (see below), whose sum is σ = 1011077760. Its totient is φ = 717361920.

The previous prime is 860736787. The next prime is 860736829. The reversal of 860736821 is 128637068.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 860736821 - 2⁶ = 860736757 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860736829) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 83225 + ... + 92993.

It is an arithmetic number, because the mean of its divisors is an integer number (63192360).

Almost surely, 2^860736821 is an apocalyptic number.

It is an amenable number.

860736821 is a deficient number, since it is larger than the sum of its proper divisors (150340939).

860736821 is a wasteful number, since it uses less digits than its factorization.

860736821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10124.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 860736821 is about 29338.3166013321. The cubic root of 860736821 is about 951.2400504438.

The spelling of 860736821 in words is "eight hundred sixty million, seven hundred thirty-six thousand, eight hundred twenty-one".