100006651 has 4 divisors (see below), whose sum is σ = 103232704. Its totient is φ = 96780600.

The previous prime is 100006639. The next prime is 100006661. The reversal of 100006651 is 156600001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100006651 - 2¹⁹ = 99482363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100006661) 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, 1612980 + ... + 1613041.

It is an arithmetic number, because the mean of its divisors is an integer number (25808176).

Almost surely, 2^100006651 is an apocalyptic number.

100006651 is a deficient number, since it is larger than the sum of its proper divisors (3226053).

100006651 is an equidigital number, since it uses as much as digits as its factorization.

100006651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3226052.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 100006651 is about 10000.3325444707. The cubic root of 100006651 is about 464.1691735356.

Adding to 100006651 its reverse (156600001), we get a palindrome (256606652).

The spelling of 100006651 in words is "one hundred million, six thousand, six hundred fifty-one".