7473621660 has 24 divisors (see below), whose sum is σ = 20926140816. Its totient is φ = 1992965760.

The previous prime is 7473621647. The next prime is 7473621677. The reversal of 7473621660 is 661263747.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62280121 + ... + 62280240.

It is an arithmetic number, because the mean of its divisors is an integer number (871922534).

Almost surely, 2^7473621660 is an apocalyptic number.

It is an amenable number.

7473621660 is an abundant number, since it is smaller than the sum of its proper divisors (13452519156).

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

7473621660 is a wasteful number, since it uses less digits than its factorization.

7473621660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124560373 (or 124560371 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 42.

The square root of 7473621660 is about 86450.1108154293. The cubic root of 7473621660 is about 1955.1362869212.

The spelling of 7473621660 in words is "seven billion, four hundred seventy-three million, six hundred twenty-one thousand, six hundred sixty".