7287787346 has 12 divisors (see below), whose sum is σ = 12716445438. Its totient is φ = 3123337392.

The previous prime is 7287787333. The next prime is 7287787349. The reversal of 7287787346 is 6437877827.

It can be written as a sum of positive squares in only one way, i.e., 6970413121 + 317374225 = 83489^2 + 17815^2 .

It is a super-2 number, since 2×7287787346² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7287787349) 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 5 ways as a sum of consecutive naturals, for example, 37182491 + ... + 37182686.

Almost surely, 2^7287787346 is an apocalyptic number.

7287787346 is a deficient number, since it is larger than the sum of its proper divisors (5428658092).

7287787346 is a wasteful number, since it uses less digits than its factorization.

7287787346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74365193 (or 74365186 counting only the distinct ones).

The product of its digits is 22127616, while the sum is 59.

The square root of 7287787346 is about 85368.5383850514. The cubic root of 7287787346 is about 1938.7950275756.

The spelling of 7287787346 in words is "seven billion, two hundred eighty-seven million, seven hundred eighty-seven thousand, three hundred forty-six".