7491248705 has 8 divisors (see below), whose sum is σ = 8990314152. Its totient is φ = 5992455168.

The previous prime is 7491248659. The next prime is 7491248717. The reversal of 7491248705 is 5078421947.

It is a Cunningham number, because it is equal to 86552²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 207821056 + 7283427649 = 14416^2 + 85343^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7491248705 - 2⁸ = 7491248449 is a prime.

It is a super-2 number, since 2×7491248705² (a number of 21 digits) contains 22 as substring.

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 7491248705.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1442 + ... + 122411.

It is an arithmetic number, because the mean of its divisors is an integer number (1123789269).

Almost surely, 2^7491248705 is an apocalyptic number.

It is an amenable number.

7491248705 is a deficient number, since it is larger than the sum of its proper divisors (1499065447).

7491248705 is a wasteful number, since it uses less digits than its factorization.

7491248705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135955.

The product of its (nonzero) digits is 564480, while the sum is 47.

The square root of 7491248705 is about 86552.0000057769. Note that the first 5 decimals coincide. The cubic root of 7491248705 is about 1956.6721873483.

The spelling of 7491248705 in words is "seven billion, four hundred ninety-one million, two hundred forty-eight thousand, seven hundred five".