820168622 has 32 divisors (see below), whose sum is σ = 1516412352. Its totient is φ = 323979264.

The previous prime is 820168571. The next prime is 820168631. The reversal of 820168622 is 226861028.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134798 + ... + 140750.

It is an arithmetic number, because the mean of its divisors is an integer number (47387886).

Almost surely, 2^820168622 is an apocalyptic number.

820168622 is a deficient number, since it is larger than the sum of its proper divisors (696243730).

820168622 is a wasteful number, since it uses less digits than its factorization.

820168622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6732.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 820168622 is about 28638.5862430393. The cubic root of 820168622 is about 936.0543158572.

The spelling of 820168622 in words is "eight hundred twenty million, one hundred sixty-eight thousand, six hundred twenty-two".