895316021 has 4 divisors (see below), whose sum is σ = 895398252. Its totient is φ = 895233792.

The previous prime is 895316017. The next prime is 895316027. The reversal of 895316021 is 120613598.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 749992996 + 145323025 = 27386^2 + 12055^2 .

It is a cyclic number.

It is not a de Polignac number, because 895316021 - 2² = 895316017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (895316027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21740 + ... + 47573.

It is an arithmetic number, because the mean of its divisors is an integer number (223849563).

Almost surely, 2^895316021 is an apocalyptic number.

It is an amenable number.

895316021 is a deficient number, since it is larger than the sum of its proper divisors (82231).

895316021 is a wasteful number, since it uses less digits than its factorization.

895316021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82230.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 895316021 is about 29921.8318456608. The cubic root of 895316021 is about 963.8115327026.

The spelling of 895316021 in words is "eight hundred ninety-five million, three hundred sixteen thousand, twenty-one".