6650987 has 8 divisors (see below), whose sum is σ = 7616736. Its totient is φ = 5689152.

The previous prime is 6650971. The next prime is 6650993. The reversal of 6650987 is 7890566.

It is a happy number.

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

It is not a de Polignac number, because 6650987 - 2⁴ = 6650971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6650687) 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, 6173 + ... + 7169.

It is an arithmetic number, because the mean of its divisors is an integer number (952092).

Almost surely, 2^6650987 is an apocalyptic number.

6650987 is a deficient number, since it is larger than the sum of its proper divisors (965749).

6650987 is an equidigital number, since it uses as much as digits as its factorization.

6650987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 6650987 is about 2578.9507556369. The cubic root of 6650987 is about 188.0595386345.

The spelling of 6650987 in words is "six million, six hundred fifty thousand, nine hundred eighty-seven".