7621386973 has 8 divisors (see below), whose sum is σ = 7992720000. Its totient is φ = 7253384688.

The previous prime is 7621386923. The next prime is 7621386991. The reversal of 7621386973 is 3796831267.

It is a happy number.

7621386973 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7621386973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7621386973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7621386923) 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, 827998 + ... + 837151.

It is an arithmetic number, because the mean of its divisors is an integer number (999090000).

Almost surely, 2^7621386973 is an apocalyptic number.

It is an amenable number.

7621386973 is a deficient number, since it is larger than the sum of its proper divisors (371333027).

7621386973 is a wasteful number, since it uses less digits than its factorization.

7621386973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665371.

The product of its digits is 2286144, while the sum is 52.

The square root of 7621386973 is about 87300.5553991497. Note that the first 3 decimals coincide. The cubic root of 7621386973 is about 1967.9376643900.

The spelling of 7621386973 in words is "seven billion, six hundred twenty-one million, three hundred eighty-six thousand, nine hundred seventy-three".