7266868690 has 32 divisors (see below), whose sum is σ = 13476993840. Its totient is φ = 2819841024.

The previous prime is 7266868657. The next prime is 7266868711. The reversal of 7266868690 is 968686627.

It can be written as a sum of positive squares in 8 ways, for example, as 2006412849 + 5260455841 = 44793^2 + 72529^2 .

It is a super-2 number, since 2×7266868690² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 29859 + ... + 124198.

Almost surely, 2^7266868690 is an apocalyptic number.

7266868690 is a deficient number, since it is larger than the sum of its proper divisors (6210125150).

7266868690 is a wasteful number, since it uses less digits than its factorization.

7266868690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154206.

The product of its (nonzero) digits is 10450944, while the sum is 58.

The square root of 7266868690 is about 85245.9306360134. The cubic root of 7266868690 is about 1936.9382293073.

The spelling of 7266868690 in words is "seven billion, two hundred sixty-six million, eight hundred sixty-eight thousand, six hundred ninety".