821662348 has 12 divisors (see below), whose sum is σ = 1548517600. Its totient is φ = 379228752.

The previous prime is 821662337. The next prime is 821662363. The reversal of 821662348 is 843266128.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 821662348.

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, 7900548 + ... + 7900651.

Almost surely, 2^821662348 is an apocalyptic number.

It is an amenable number.

821662348 is a deficient number, since it is larger than the sum of its proper divisors (726855252).

821662348 is a wasteful number, since it uses less digits than its factorization.

821662348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15801216 (or 15801214 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 821662348 is about 28664.6532858850. The cubic root of 821662348 is about 936.6222318782.

The spelling of 821662348 in words is "eight hundred twenty-one million, six hundred sixty-two thousand, three hundred forty-eight".