620406402 has 32 divisors (see below), whose sum is σ = 1546988544. Its totient is φ = 161144400.

The previous prime is 620406401. The next prime is 620406403. The reversal of 620406402 is 204604026.

It is an interprime number because it is at equal distance from previous prime (620406401) and next prime (620406403).

It is not an unprimeable number, because it can be changed into a prime (620406401) 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, 670974 + ... + 671897.

It is an arithmetic number, because the mean of its divisors is an integer number (48343392).

Almost surely, 2^620406402 is an apocalyptic number.

620406402 is an abundant number, since it is smaller than the sum of its proper divisors (926582142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620406402 is a wasteful number, since it uses less digits than its factorization.

620406402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342894.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 620406402 is about 24907.9586076419. The cubic root of 620406402 is about 852.8881693319. Note that the first 3 decimals are identical.

The spelling of 620406402 in words is "six hundred twenty million, four hundred six thousand, four hundred two".