821612098 has 8 divisors (see below), whose sum is σ = 1297282320. Its totient is φ = 389184660.

The previous prime is 821612093. The next prime is 821612131. The reversal of 821612098 is 890216128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (821612093) 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, 10810648 + ... + 10810723.

It is an arithmetic number, because the mean of its divisors is an integer number (162160290).

Almost surely, 2^821612098 is an apocalyptic number.

821612098 is a deficient number, since it is larger than the sum of its proper divisors (475670222).

821612098 is a wasteful number, since it uses less digits than its factorization.

821612098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21621392.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 821612098 is about 28663.7767574338. The cubic root of 821612098 is about 936.6031379739.

The spelling of 821612098 in words is "eight hundred twenty-one million, six hundred twelve thousand, ninety-eight".