6552621630 has 64 divisors (see below), whose sum is σ = 18076219200. Its totient is φ = 1687109760.

The previous prime is 6552621613. The next prime is 6552621631. The reversal of 6552621630 is 361262556.

It is a happy number.

6552621630 is a `hidden beast` number, since 6 + 552 + 62 + 16 + 30 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6552621631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 410601 + ... + 426260.

It is an arithmetic number, because the mean of its divisors is an integer number (282440925).

Almost surely, 2^6552621630 is an apocalyptic number.

6552621630 is an abundant number, since it is smaller than the sum of its proper divisors (11523597570).

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

6552621630 is a wasteful number, since it uses less digits than its factorization.

6552621630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836906 (or 836900 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 6552621630 is about 80948.2651450913. The cubic root of 6552621630 is about 1871.2782237581.

The spelling of 6552621630 in words is "six billion, five hundred fifty-two million, six hundred twenty-one thousand, six hundred thirty".