531663040 has 28 divisors (see below), whose sum is σ = 1266023376. Its totient is φ = 212665088.

The previous prime is 531663029. The next prime is 531663071. The reversal of 531663040 is 40366135.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830404 + ... + 831043.

Almost surely, 2^531663040 is an apocalyptic number.

It is an amenable number.

531663040 is an abundant number, since it is smaller than the sum of its proper divisors (734360336).

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

531663040 is a wasteful number, since it uses less digits than its factorization.

531663040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661464 (or 1661454 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 531663040 is about 23057.8194979491. The cubic root of 531663040 is about 810.1127922999.

The spelling of 531663040 in words is "five hundred thirty-one million, six hundred sixty-three thousand, forty".