620515103 has 12 divisors (see below), whose sum is σ = 686223648. Its totient is φ = 560589120.

The previous prime is 620515081. The next prime is 620515109. The reversal of 620515103 is 301515026.

It is not a de Polignac number, because 620515103 - 2⁶ = 620515039 is a prime.

It is a super-2 number, since 2×620515103² = 770077986102201218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620515109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31118 + ... + 47003.

It is an arithmetic number, because the mean of its divisors is an integer number (57185304).

Almost surely, 2^620515103 is an apocalyptic number.

620515103 is a deficient number, since it is larger than the sum of its proper divisors (65708545).

620515103 is a wasteful number, since it uses less digits than its factorization.

620515103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78194 (or 78181 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 620515103 is about 24910.1405656411. The cubic root of 620515103 is about 852.9379777492.

The spelling of 620515103 in words is "six hundred twenty million, five hundred fifteen thousand, one hundred three".