7440403663 has 32 divisors (see below), whose sum is σ = 9419120640. Its totient is φ = 5709120000.

The previous prime is 7440403643. The next prime is 7440403673. The reversal of 7440403663 is 3663040447.

It is a cyclic number.

It is not a de Polignac number, because 7440403663 - 2¹³ = 7440395471 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 (7440403603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1482903 + ... + 1487911.

It is an arithmetic number, because the mean of its divisors is an integer number (294347520).

Almost surely, 2^7440403663 is an apocalyptic number.

7440403663 is a deficient number, since it is larger than the sum of its proper divisors (1978716977).

7440403663 is a wasteful number, since it uses less digits than its factorization.

7440403663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5319.

The product of its (nonzero) digits is 145152, while the sum is 37.

The square root of 7440403663 is about 86257.7745075770. The cubic root of 7440403663 is about 1952.2353207431.

The spelling of 7440403663 in words is "seven billion, four hundred forty million, four hundred three thousand, six hundred sixty-three".