620757424 has 20 divisors (see below), whose sum is σ = 1374534544. Its totient is φ = 266038848.

The previous prime is 620757421. The next prime is 620757439. The reversal of 620757424 is 424757026.

It is a super-2 number, since 2×620757424² = 770679558902231552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (620757421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2771127 + ... + 2771350.

Almost surely, 2^620757424 is an apocalyptic number.

It is an amenable number.

620757424 is an abundant number, since it is smaller than the sum of its proper divisors (753777120).

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

620757424 is a wasteful number, since it uses less digits than its factorization.

620757424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5542492 (or 5542486 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 37.

The square root of 620757424 is about 24915.0039935778. The cubic root of 620757424 is about 853.0489919072.

The spelling of 620757424 in words is "six hundred twenty million, seven hundred fifty-seven thousand, four hundred twenty-four".