636673097 has 16 divisors (see below), whose sum is σ = 686057472. Its totient is φ = 589279680.

The previous prime is 636673073. The next prime is 636673099. The reversal of 636673097 is 790376636.

It is a cyclic number.

It is not a de Polignac number, because 636673097 - 2¹⁰ = 636672073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (636673099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160583 + ... + 164499.

It is an arithmetic number, because the mean of its divisors is an integer number (42878592).

Almost surely, 2^636673097 is an apocalyptic number.

It is an amenable number.

636673097 is a deficient number, since it is larger than the sum of its proper divisors (49384375).

636673097 is a wasteful number, since it uses less digits than its factorization.

636673097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4168.

The product of its (nonzero) digits is 857304, while the sum is 47.

The square root of 636673097 is about 25232.3819129309. The cubic root of 636673097 is about 860.2780320623.

The spelling of 636673097 in words is "six hundred thirty-six million, six hundred seventy-three thousand, ninety-seven".