821464068 has 12 divisors (see below), whose sum is σ = 1916749520. Its totient is φ = 273821352.

The previous prime is 821464051. The next prime is 821464079. The reversal of 821464068 is 860464128.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34227658 + ... + 34227681.

Almost surely, 2^821464068 is an apocalyptic number.

It is an amenable number.

821464068 is an abundant number, since it is smaller than the sum of its proper divisors (1095285452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

821464068 is a wasteful number, since it uses less digits than its factorization.

821464068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68455346 (or 68455344 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 821464068 is about 28661.1944621992. The cubic root of 821464068 is about 936.5468852766.

The spelling of 821464068 in words is "eight hundred twenty-one million, four hundred sixty-four thousand, sixty-eight".