6987253455 has 192 divisors, whose sum is σ = 15625681920. Its totient is φ = 2900012544.

The previous prime is 6987253451. The next prime is 6987253499. The reversal of 6987253455 is 5543527896.

6987253455 is a `hidden beast` number, since 69 + 87 + 2 + 53 + 455 = 666.

It is not a de Polignac number, because 6987253455 - 2² = 6987253451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6987253451) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 10699909 + ... + 10700561.

It is an arithmetic number, because the mean of its divisors is an integer number (81383760).

Almost surely, 2^6987253455 is an apocalyptic number.

6987253455 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6987253455 is an abundant number, since it is smaller than the sum of its proper divisors (8638428465).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6987253455 is a wasteful number, since it uses less digits than its factorization.

6987253455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767 (or 748 counting only the distinct ones).

The product of its digits is 9072000, while the sum is 54.

The square root of 6987253455 is about 83589.7927680168. The cubic root of 6987253455 is about 1911.7693695102.

The spelling of 6987253455 in words is "six billion, nine hundred eighty-seven million, two hundred fifty-three thousand, four hundred fifty-five".