531627640 has 32 divisors (see below), whose sum is σ = 1208014560. Its totient is φ = 210544000.

The previous prime is 531627637. The next prime is 531627653. The reversal of 531627640 is 46726135.

It is a happy number.

It is a super-2 number, since 2×531627640² = 565255895223939200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 531627596 and 531627605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61756 + ... + 69835.

It is an arithmetic number, because the mean of its divisors is an integer number (37750455).

Almost surely, 2^531627640 is an apocalyptic number.

It is an amenable number.

531627640 is an abundant number, since it is smaller than the sum of its proper divisors (676386920).

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

531627640 is a wasteful number, since it uses less digits than its factorization.

531627640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131703 (or 131699 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 531627640 is about 23057.0518497053. The cubic root of 531627640 is about 810.0948118453.

The spelling of 531627640 in words is "five hundred thirty-one million, six hundred twenty-seven thousand, six hundred forty".