690439882770 has 192 divisors, whose sum is σ = 2046870798336. Its totient is φ = 166060601280.

The previous prime is 690439882757. The next prime is 690439882787. The reversal of 690439882770 is 77288934096.

It is a junction number, because it is equal to n+sod(n) for n = 690439882698 and 690439882707.

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 95 ways as a sum of consecutive naturals, for example, 3293017 + ... + 3496403.

It is an arithmetic number, because the mean of its divisors is an integer number (10660785408).

Almost surely, 2^690439882770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690439882770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1023435399168).

690439882770 is an abundant number, since it is smaller than the sum of its proper divisors (1356430915566).

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

690439882770 is a wasteful number, since it uses less digits than its factorization.

690439882770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203547 (or 203535 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 63.

The spelling of 690439882770 in words is "six hundred ninety billion, four hundred thirty-nine million, eight hundred eighty-two thousand, seven hundred seventy".