690929481288 has 128 divisors (see below), whose sum is σ = 1904255619840. Its totient is φ = 208008192000.

The previous prime is 690929481287. The next prime is 690929481289. The reversal of 690929481288 is 882184929096.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (690929481287) and next prime (690929481289).

It is a super-2 number, since 2×690929481288² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (690929481287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 681853 + ... + 1358963.

It is an arithmetic number, because the mean of its divisors is an integer number (14876997030).

Almost surely, 2^690929481288 is an apocalyptic number.

690929481288 is a gapful number since it is divisible by the number (68) 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 690929481288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (952127809920).

690929481288 is an abundant number, since it is smaller than the sum of its proper divisors (1213326138552).

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

690929481288 is a wasteful number, since it uses less digits than its factorization.

690929481288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677239 (or 677235 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 66.

The spelling of 690929481288 in words is "six hundred ninety billion, nine hundred twenty-nine million, four hundred eighty-one thousand, two hundred eighty-eight".