690324643008 has 672 divisors, whose sum is σ = 2728591057920. Its totient is φ = 161034117120.

The previous prime is 690324643003. The next prime is 690324643039. The reversal of 690324643008 is 800346423096.

It is a tau number, because it is divible by the number of its divisors (672).

It is a super-2 number, since 2×690324643008² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (690324643003) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 21317133 + ... + 21349491.

It is an arithmetic number, because the mean of its divisors is an integer number (4060403360).

Almost surely, 2^690324643008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690324643008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1364295528960).

690324643008 is an abundant number, since it is smaller than the sum of its proper divisors (2038266414912).

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

690324643008 is a wasteful number, since it uses less digits than its factorization.

690324643008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32445 (or 32432 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The spelling of 690324643008 in words is "six hundred ninety billion, three hundred twenty-four million, six hundred forty-three thousand, eight".