6651506 has 8 divisors (see below), whose sum is σ = 9995520. Its totient is φ = 3319668.

The previous prime is 6651503. The next prime is 6651517. The reversal of 6651506 is 6051566.

6651506 = 739² + 740² + ... + 750².

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

It is not an unprimeable number, because it can be changed into a prime (6651503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1526 + ... + 3953.

It is an arithmetic number, because the mean of its divisors is an integer number (1249440).

Almost surely, 2^6651506 is an apocalyptic number.

6651506 is a deficient number, since it is larger than the sum of its proper divisors (3344014).

6651506 is a wasteful number, since it uses less digits than its factorization.

6651506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6088.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 6651506 is about 2579.0513759908. The cubic root of 6651506 is about 188.0644301572.

The spelling of 6651506 in words is "six million, six hundred fifty-one thousand, five hundred six".