7872655 has 16 divisors (see below), whose sum is σ = 11049984. Its totient is φ = 5271840.

The previous prime is 7872653. The next prime is 7872661. The reversal of 7872655 is 5562787.

It is not a de Polignac number, because 7872655 - 2¹ = 7872653 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7872653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1111 + ... + 4120.

It is an arithmetic number, because the mean of its divisors is an integer number (690624).

Almost surely, 2^7872655 is an apocalyptic number.

7872655 is a deficient number, since it is larger than the sum of its proper divisors (3177329).

7872655 is a wasteful number, since it uses less digits than its factorization.

7872655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5286.

The product of its digits is 117600, while the sum is 40.

The square root of 7872655 is about 2805.8251905634. The cubic root of 7872655 is about 198.9331105208.

The spelling of 7872655 in words is "seven million, eight hundred seventy-two thousand, six hundred fifty-five".