7532820621 has 12 divisors (see below), whose sum is σ = 10887167200. Its totient is φ = 5018914440.

The previous prime is 7532820619. The next prime is 7532820641. The reversal of 7532820621 is 1260282357.

7532820621 is a `hidden beast` number, since 7 + 5 + 3 + 2 + 8 + 20 + 621 = 666.

It is not a de Polignac number, because 7532820621 - 2¹ = 7532820619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7532820601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 231025 + ... + 261606.

Almost surely, 2^7532820621 is an apocalyptic number.

It is an amenable number.

7532820621 is a deficient number, since it is larger than the sum of its proper divisors (3354346579).

7532820621 is a wasteful number, since it uses less digits than its factorization.

7532820621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494336 (or 494333 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 7532820621 is about 86791.8234685734. The cubic root of 7532820621 is about 1960.2849631662.

The spelling of 7532820621 in words is "seven billion, five hundred thirty-two million, eight hundred twenty thousand, six hundred twenty-one".