620020515 has 16 divisors (see below), whose sum is σ = 1050388128. Its totient is φ = 311225856.

The previous prime is 620020469. The next prime is 620020529. The reversal of 620020515 is 515020026.

It is not a de Polignac number, because 620020515 - 2⁸ = 620020259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 620020491 and 620020500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1215472 + ... + 1215981.

It is an arithmetic number, because the mean of its divisors is an integer number (65649258).

Almost surely, 2^620020515 is an apocalyptic number.

620020515 is a deficient number, since it is larger than the sum of its proper divisors (430367613).

620020515 is a wasteful number, since it uses less digits than its factorization.

620020515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431478.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 620020515 is about 24900.2111436831. The cubic root of 620020515 is about 852.7113031596.

The spelling of 620020515 in words is "six hundred twenty million, twenty thousand, five hundred fifteen".