7628787 has 12 divisors (see below), whose sum is σ = 11091600. Its totient is φ = 5052528.

The previous prime is 7628773. The next prime is 7628807. The reversal of 7628787 is 7878267.

It is not a de Polignac number, because 7628787 - 2⁶ = 7628723 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (7628717) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1287 + ... + 4112.

It is an arithmetic number, because the mean of its divisors is an integer number (924300).

Almost surely, 2^7628787 is an apocalyptic number.

7628787 is a deficient number, since it is larger than the sum of its proper divisors (3462813).

7628787 is a wasteful number, since it uses less digits than its factorization.

7628787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5562 (or 5559 counting only the distinct ones).

The product of its digits is 263424, while the sum is 45.

The square root of 7628787 is about 2762.0258869171. The cubic root of 7628787 is about 196.8574384940.

It can be divided in two parts, 76 and 28787, that multiplied together give a palindrome (2187812).

The spelling of 7628787 in words is "seven million, six hundred twenty-eight thousand, seven hundred eighty-seven".