895721 has 2 divisors, whose sum is σ = 895722. Its totient is φ = 895720.

The previous prime is 895709. The next prime is 895729. The reversal of 895721 is 127598.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 541696 + 354025 = 736^2 + 595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-895721 is a prime.

It is a super-2 number, since 2×895721² = 1604632219682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (895729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447860 + 447861.

It is an arithmetic number, because the mean of its divisors is an integer number (447861).

2⁸⁹⁵⁷²¹ is an apocalyptic number.

It is an amenable number.

895721 is a deficient number, since it is larger than the sum of its proper divisors (1).

895721 is an equidigital number, since it uses as much as digits as its factorization.

895721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 32.

The square root of 895721 is about 946.4253800485. The cubic root of 895721 is about 96.3956831340.

The spelling of 895721 in words is "eight hundred ninety-five thousand, seven hundred twenty-one".