3531656620 has 24 divisors (see below), whose sum is σ = 7426969200. Its totient is φ = 1410664512.

The previous prime is 3531656519. The next prime is 3531656621. The reversal of 3531656620 is 266561353.

It is a self number, because there is not a number n which added to its sum of digits gives 3531656620.

It is not an unprimeable number, because it can be changed into a prime (3531656621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110350 + ... + 138709.

It is an arithmetic number, because the mean of its divisors is an integer number (309457050).

Almost surely, 2^3531656620 is an apocalyptic number.

It is an amenable number.

3531656620 is an abundant number, since it is smaller than the sum of its proper divisors (3895312580).

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

3531656620 is a wasteful number, since it uses less digits than its factorization.

3531656620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249777 (or 249775 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 3531656620 is about 59427.7428479326. The cubic root of 3531656620 is about 1522.8582846262.

The spelling of 3531656620 in words is "three billion, five hundred thirty-one million, six hundred fifty-six thousand, six hundred twenty".