7621386923 has 2 divisors, whose sum is σ = 7621386924. Its totient is φ = 7621386922.

The previous prime is 7621386917. The next prime is 7621386991. The reversal of 7621386923 is 3296831267.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7621386923 - 2⁴ = 7621386907 is a prime.

It is a super-3 number, since 3×7621386923³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (7621386023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3810693461 + 3810693462.

It is an arithmetic number, because the mean of its divisors is an integer number (3810693462).

Almost surely, 2^7621386923 is an apocalyptic number.

7621386923 is a deficient number, since it is larger than the sum of its proper divisors (1).

7621386923 is an equidigital number, since it uses as much as digits as its factorization.

7621386923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 47.

The square root of 7621386923 is about 87300.5551127826. Note that the first 3 decimals coincide. The cubic root of 7621386923 is about 1967.9376600864.

The spelling of 7621386923 in words is "seven billion, six hundred twenty-one million, three hundred eighty-six thousand, nine hundred twenty-three".