7426987 has 8 divisors (see below), whose sum is σ = 7848000. Its totient is φ = 7017024.

The previous prime is 7426981. The next prime is 7427009. The reversal of 7426987 is 7896247.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7426987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7426981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1362 + ... + 4087.

It is an arithmetic number, because the mean of its divisors is an integer number (981000).

Almost surely, 2^7426987 is an apocalyptic number.

7426987 is the 1363-rd decagonal number.

7426987 is a deficient number, since it is larger than the sum of its proper divisors (421013).

7426987 is a wasteful number, since it uses less digits than its factorization.

7426987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5525.

The product of its digits is 169344, while the sum is 43.

The square root of 7426987 is about 2725.2498967985. The cubic root of 7426987 is about 195.1061180022.

The spelling of 7426987 in words is "seven million, four hundred twenty-six thousand, nine hundred eighty-seven".