531733680 has 80 divisors (see below), whose sum is σ = 1831534560. Its totient is φ = 141795072.

The previous prime is 531733673. The next prime is 531733681. The reversal of 531733680 is 86337135.

531733680 is a `hidden beast` number, since 5 + 317 + 336 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (531733681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120927 + ... + 125246.

It is an arithmetic number, because the mean of its divisors is an integer number (22894182).

Almost surely, 2^531733680 is an apocalyptic number.

It is an amenable number.

531733680 is an abundant number, since it is smaller than the sum of its proper divisors (1299800880).

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

531733680 is a wasteful number, since it uses less digits than its factorization.

531733680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246195 (or 246183 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 531733680 is about 23059.3512484632. The cubic root of 531733680 is about 810.1486695561.

The spelling of 531733680 in words is "five hundred thirty-one million, seven hundred thirty-three thousand, six hundred eighty".