620215450 has 48 divisors (see below), whose sum is σ = 1202065920. Its totient is φ = 237816000.

The previous prime is 620215417. The next prime is 620215451. The reversal of 620215450 is 54512026.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (620215451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167115 + ... + 170785.

It is an arithmetic number, because the mean of its divisors is an integer number (25043040).

Almost surely, 2^620215450 is an apocalyptic number.

620215450 is a deficient number, since it is larger than the sum of its proper divisors (581850470).

620215450 is a wasteful number, since it uses less digits than its factorization.

620215450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3823 (or 3818 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 620215450 is about 24904.1251603023. The cubic root of 620215450 is about 852.8006581926.

Adding to 620215450 its reverse (54512026), we get a palindrome (674727476).

The spelling of 620215450 in words is "six hundred twenty million, two hundred fifteen thousand, four hundred fifty".