636041973 has 16 divisors (see below), whose sum is σ = 1000472576. Its totient is φ = 351727920.

The previous prime is 636041957. The next prime is 636041993. The reversal of 636041973 is 379140636.

It is not a de Polignac number, because 636041973 - 2⁴ = 636041957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636041933) 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, 487861 + ... + 489162.

It is an arithmetic number, because the mean of its divisors is an integer number (62529536).

Almost surely, 2^636041973 is an apocalyptic number.

It is an amenable number.

636041973 is a deficient number, since it is larger than the sum of its proper divisors (364430603).

636041973 is a wasteful number, since it uses less digits than its factorization.

636041973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977064.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 636041973 is about 25219.8725809628. The cubic root of 636041973 is about 859.9936780678.

The spelling of 636041973 in words is "six hundred thirty-six million, forty-one thousand, nine hundred seventy-three".