640050177 has 8 divisors (see below), whose sum is σ = 919046464. Its totient is φ = 393877008.

The previous prime is 640050133. The next prime is 640050199. The reversal of 640050177 is 771050046.

It is a happy number.

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

It is not a de Polignac number, because 640050177 - 2¹⁵ = 640017409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (640050107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8205733 + ... + 8205810.

It is an arithmetic number, because the mean of its divisors is an integer number (114880808).

Almost surely, 2^640050177 is an apocalyptic number.

It is an amenable number.

640050177 is a deficient number, since it is larger than the sum of its proper divisors (278996287).

640050177 is a wasteful number, since it uses less digits than its factorization.

640050177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16411559.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 640050177 is about 25299.2129719484. The cubic root of 640050177 is about 861.7963968970.

The spelling of 640050177 in words is "six hundred forty million, fifty thousand, one hundred seventy-seven".