620717240 has 64 divisors (see below), whose sum is σ = 1640792160. Its totient is φ = 208350720.

The previous prime is 620717233. The next prime is 620717263. The reversal of 620717240 is 42717026.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48539 + ... + 59978.

Almost surely, 2^620717240 is an apocalyptic number.

It is an amenable number.

620717240 is an abundant number, since it is smaller than the sum of its proper divisors (1020074920).

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

620717240 is a wasteful number, since it uses less digits than its factorization.

620717240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108552 (or 108548 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 620717240 is about 24914.1975588218. The cubic root of 620717240 is about 853.0305844697.

The spelling of 620717240 in words is "six hundred twenty million, seven hundred seventeen thousand, two hundred forty".