802897821 has 24 divisors (see below), whose sum is σ = 1274850720. Its totient is φ = 482882400.

The previous prime is 802897819. The next prime is 802897829. The reversal of 802897821 is 128798208.

It is a happy number.

It is not a de Polignac number, because 802897821 - 2¹ = 802897819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (802897829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17986 + ... + 43923.

It is an arithmetic number, because the mean of its divisors is an integer number (53118780).

Almost surely, 2^802897821 is an apocalyptic number.

It is an amenable number.

802897821 is a deficient number, since it is larger than the sum of its proper divisors (471952899).

802897821 is a wasteful number, since it uses less digits than its factorization.

802897821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62057 (or 62054 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 802897821 is about 28335.4516639492. The cubic root of 802897821 is about 929.4372905335.

The spelling of 802897821 in words is "eight hundred two million, eight hundred ninety-seven thousand, eight hundred twenty-one".