690721534080 has 512 divisors, whose sum is σ = 2484152064000. Its totient is φ = 181364649984.

The previous prime is 690721534073. The next prime is 690721534147. The reversal of 690721534080 is 80435127096.

690721534080 is a `hidden beast` number, since 6 + 90 + 7 + 2 + 153 + 408 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 63 ways as a sum of consecutive naturals, for example, 330962797 + ... + 330964883.

It is an arithmetic number, because the mean of its divisors is an integer number (4851859500).

It is a 1-persistent number, because it is pandigital, but 2⋅690721534080 = 1381443068160 is not.

Almost surely, 2^690721534080 is an apocalyptic number.

690721534080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690721534080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1242076032000).

690721534080 is an abundant number, since it is smaller than the sum of its proper divisors (1793430529920).

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

690721534080 is a wasteful number, since it uses less digits than its factorization.

690721534080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401 (or 2383 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 690721534080 in words is "six hundred ninety billion, seven hundred twenty-one million, five hundred thirty-four thousand, eighty".