955861620 has 144 divisors (see below), whose sum is σ = 3186203328. Its totient is φ = 213373440.

The previous prime is 955861579. The next prime is 955861639. The reversal of 955861620 is 26168559.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 122640 + ... + 130200.

It is an arithmetic number, because the mean of its divisors is an integer number (22126412).

Almost surely, 2^955861620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 955861620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1593101664).

955861620 is an abundant number, since it is smaller than the sum of its proper divisors (2230341708).

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

955861620 is a wasteful number, since it uses less digits than its factorization.

955861620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7630 (or 7621 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 955861620 is about 30917.0118219727. The cubic root of 955861620 is about 985.0652709116.

The spelling of 955861620 in words is "nine hundred fifty-five million, eight hundred sixty-one thousand, six hundred twenty".