620490620 has 12 divisors (see below), whose sum is σ = 1303030344. Its totient is φ = 248196240.

The previous prime is 620490601. The next prime is 620490677. The reversal of 620490620 is 26094026.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15512246 + ... + 15512285.

It is an arithmetic number, because the mean of its divisors is an integer number (108585862).

Almost surely, 2^620490620 is an apocalyptic number.

It is an amenable number.

620490620 is an abundant number, since it is smaller than the sum of its proper divisors (682539724).

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

620490620 is a wasteful number, since it uses less digits than its factorization.

620490620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31024540 (or 31024538 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 620490620 is about 24909.6491344218. The cubic root of 620490620 is about 852.9267597815.

The spelling of 620490620 in words is "six hundred twenty million, four hundred ninety thousand, six hundred twenty".