7620985903 has 4 divisors (see below), whose sum is σ = 7623329040. Its totient is φ = 7618642768.

The previous prime is 7620985873. The next prime is 7620985919. The reversal of 7620985903 is 3095890267.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7620985903 - 2¹⁷ = 7620854831 is a prime.

It is a super-2 number, since 2×7620985903² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7620985973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1166683 + ... + 1173196.

It is an arithmetic number, because the mean of its divisors is an integer number (1905832260).

Almost surely, 2^7620985903 is an apocalyptic number.

7620985903 is a deficient number, since it is larger than the sum of its proper divisors (2343137).

7620985903 is a wasteful number, since it uses less digits than its factorization.

7620985903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2343136.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 7620985903 is about 87298.2583045046. The cubic root of 7620985903 is about 1967.9031433504.

The spelling of 7620985903 in words is "seven billion, six hundred twenty million, nine hundred eighty-five thousand, nine hundred three".