6723987 has 8 divisors (see below), whose sum is σ = 9049536. Its totient is φ = 4440552.

The previous prime is 6723979. The next prime is 6724007. The reversal of 6723987 is 7893276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6723987 - 2³ = 6723979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6723907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10153 + ... + 10794.

It is an arithmetic number, because the mean of its divisors is an integer number (1131192).

Almost surely, 2^6723987 is an apocalyptic number.

6723987 is a deficient number, since it is larger than the sum of its proper divisors (2325549).

6723987 is a wasteful number, since it uses less digits than its factorization.

6723987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21057.

The product of its digits is 127008, while the sum is 42.

The square root of 6723987 is about 2593.0651746533. The cubic root of 6723987 is about 188.7450721635.

The spelling of 6723987 in words is "six million, seven hundred twenty-three thousand, nine hundred eighty-seven".