7663400001 has 6 divisors (see below), whose sum is σ = 11069355570. Its totient is φ = 5108933328.

The previous prime is 7663399993. The next prime is 7663400021. The reversal of 7663400001 is 1000043667.

It can be written as a sum of positive squares in only one way, i.e., 4563137601 + 3100262400 = 67551^2 + 55680^2 .

It is not a de Polignac number, because 7663400001 - 2³ = 7663399993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7663400021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 425744436 + ... + 425744453.

It is an arithmetic number, because the mean of its divisors is an integer number (1844892595).

Almost surely, 2^7663400001 is an apocalyptic number.

It is an amenable number.

7663400001 is a deficient number, since it is larger than the sum of its proper divisors (3405955569).

7663400001 is a wasteful number, since it uses less digits than its factorization.

7663400001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851488895 (or 851488892 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 7663400001 is about 87540.8476141281. The cubic root of 7663400001 is about 1971.5471369122.

Adding to 7663400001 its reverse (1000043667), we get a palindrome (8663443668).

The spelling of 7663400001 in words is "seven billion, six hundred sixty-three million, four hundred thousand, one".