6987623 has 8 divisors (see below), whose sum is σ = 7113600. Its totient is φ = 6862968.

The previous prime is 6987619. The next prime is 6987661. The reversal of 6987623 is 3267896.

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

It is a cyclic number.

It is not a de Polignac number, because 6987623 - 2² = 6987619 is a prime.

It is a d-powerful number, because it can be written as 6 + 9³ + 8 + 7 + 6⁸ + 2¹⁹ + 3¹⁴ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6987613) 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, 18248 + ... + 18626.

It is an arithmetic number, because the mean of its divisors is an integer number (889200).

Almost surely, 2^6987623 is an apocalyptic number.

6987623 is a deficient number, since it is larger than the sum of its proper divisors (125977).

6987623 is a wasteful number, since it uses less digits than its factorization.

6987623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661.

The product of its digits is 108864, while the sum is 41.

The square root of 6987623 is about 2643.4112430721. The cubic root of 6987623 is about 191.1803072422.

The spelling of 6987623 in words is "six million, nine hundred eighty-seven thousand, six hundred twenty-three".