620132191 has 6 divisors (see below), whose sum is σ = 721378320. Its totient is φ = 531541836.

The previous prime is 620132179. The next prime is 620132209. The reversal of 620132191 is 191231026.

It is not a de Polignac number, because 620132191 - 2⁵ = 620132159 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 (620102191) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6327831 + ... + 6327928.

It is an arithmetic number, because the mean of its divisors is an integer number (120229720).

Almost surely, 2^620132191 is an apocalyptic number.

620132191 is a deficient number, since it is larger than the sum of its proper divisors (101246129).

620132191 is a wasteful number, since it uses less digits than its factorization.

620132191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12655773 (or 12655766 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 620132191 is about 24902.4535136601. The cubic root of 620132191 is about 852.7624959123.

The spelling of 620132191 in words is "six hundred twenty million, one hundred thirty-two thousand, one hundred ninety-one".