620420402 has 32 divisors (see below), whose sum is σ = 1082153088. Its totient is φ = 261271296.

The previous prime is 620420401. The next prime is 620420407. The reversal of 620420402 is 204024026.

It is not an unprimeable number, because it can be changed into a prime (620420401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634538 + ... + 635514.

It is an arithmetic number, because the mean of its divisors is an integer number (33817284).

Almost surely, 2^620420402 is an apocalyptic number.

620420402 is a deficient number, since it is larger than the sum of its proper divisors (461732686).

620420402 is a wasteful number, since it uses less digits than its factorization.

620420402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 620420402 is about 24908.2396407293. The cubic root of 620420402 is about 852.8945846668.

Adding to 620420402 its reverse (204024026), we get a palindrome (824444428).

The spelling of 620420402 in words is "six hundred twenty million, four hundred twenty thousand, four hundred two".