953221620 has 96 divisors (see below), whose sum is σ = 3043450368. Its totient is φ = 220833792.

The previous prime is 953221597. The next prime is 953221649. The reversal of 953221620 is 26122359.

It is a super-4 number, since 4×953221620⁴ (a number of 37 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22684 + ... + 49203.

It is an arithmetic number, because the mean of its divisors is an integer number (31702608).

Almost surely, 2^953221620 is an apocalyptic number.

It is an amenable number.

953221620 is an abundant number, since it is smaller than the sum of its proper divisors (2090228748).

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

953221620 is a wasteful number, since it uses less digits than its factorization.

953221620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71929 (or 71927 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 953221620 is about 30874.2873601967. The cubic root of 953221620 is about 984.1575488034.

Adding to 953221620 its reverse (26122359), we get a palindrome (979343979).

The spelling of 953221620 in words is "nine hundred fifty-three million, two hundred twenty-one thousand, six hundred twenty".