851606499 has 8 divisors (see below), whose sum is σ = 1138693392. Its totient is φ = 566128640.

The previous prime is 851606471. The next prime is 851606519. The reversal of 851606499 is 994606158.

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 851606499 - 2⁹ = 851605987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (851606419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401022 + ... + 403139.

It is an arithmetic number, because the mean of its divisors is an integer number (142336674).

Almost surely, 2^851606499 is an apocalyptic number.

851606499 is a deficient number, since it is larger than the sum of its proper divisors (287086893).

851606499 is a wasteful number, since it uses less digits than its factorization.

851606499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804517.

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 851606499 is about 29182.2976991189. The cubic root of 851606499 is about 947.8646402278.

The spelling of 851606499 in words is "eight hundred fifty-one million, six hundred six thousand, four hundred ninety-nine".