621006532 has 24 divisors (see below), whose sum is σ = 1200721536. Its totient is φ = 279531648.

The previous prime is 621006523. The next prime is 621006563. The reversal of 621006532 is 235600126.

It is a super-2 number, since 2×621006532² = 771298225573334048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 621006497 and 621006506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196968 + ... + 200095.

It is an arithmetic number, because the mean of its divisors is an integer number (50030064).

Almost surely, 2^621006532 is an apocalyptic number.

It is an amenable number.

621006532 is a deficient number, since it is larger than the sum of its proper divisors (579715004).

621006532 is a wasteful number, since it uses less digits than its factorization.

621006532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397107 (or 397105 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 621006532 is about 24920.0026484750. The cubic root of 621006532 is about 853.1630852717.

Adding to 621006532 its reverse (235600126), we get a palindrome (856606658).

The spelling of 621006532 in words is "six hundred twenty-one million, six thousand, five hundred thirty-two".