620432111 has 4 divisors (see below), whose sum is σ = 668157672. Its totient is φ = 572706552.

The previous prime is 620432081. The next prime is 620432123. The reversal of 620432111 is 111234026.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 620432111 - 2²² = 616237807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620432011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23862761 + ... + 23862786.

It is an arithmetic number, because the mean of its divisors is an integer number (167039418).

Almost surely, 2^620432111 is an apocalyptic number.

620432111 is a deficient number, since it is larger than the sum of its proper divisors (47725561).

620432111 is a wasteful number, since it uses less digits than its factorization.

620432111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47725560.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 620432111 is about 24908.4746823245. The cubic root of 620432111 is about 852.8999501039.

Adding to 620432111 its reverse (111234026), we get a palindrome (731666137).

The spelling of 620432111 in words is "six hundred twenty million, four hundred thirty-two thousand, one hundred eleven".