620524631 has 8 divisors (see below), whose sum is σ = 624795600. Its totient is φ = 616268160.

The previous prime is 620524607. The next prime is 620524661. The reversal of 620524631 is 136425026.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620524631 is a prime.

It is a super-2 number, since 2×620524631² = 770101635355372322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 620524594 and 620524603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620524661) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 90440 + ... + 97058.

It is an arithmetic number, because the mean of its divisors is an integer number (78099450).

Almost surely, 2^620524631 is an apocalyptic number.

620524631 is a deficient number, since it is larger than the sum of its proper divisors (4270969).

620524631 is a wasteful number, since it uses less digits than its factorization.

620524631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7249.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 620524631 is about 24910.3318123224. The cubic root of 620524631 is about 852.9423433434.

Adding to 620524631 its reverse (136425026), we get a palindrome (756949657).

The spelling of 620524631 in words is "six hundred twenty million, five hundred twenty-four thousand, six hundred thirty-one".