690796080 has 320 divisors, whose sum is σ = 2605249920. Its totient is φ = 167215104.

The previous prime is 690796049. The next prime is 690796081. The reversal of 690796080 is 80697096.

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

It is not an unprimeable number, because it can be changed into a prime (690796081) by changing a digit.

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, 2049672 + ... + 2050008.

It is an arithmetic number, because the mean of its divisors is an integer number (8141406).

Almost surely, 2^690796080 is an apocalyptic number.

690796080 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 690796080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1302624960).

690796080 is an abundant number, since it is smaller than the sum of its proper divisors (1914453840).

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

690796080 is a wasteful number, since it uses less digits than its factorization.

690796080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 690796080 is about 26282.9998287867. Note that the first 3 decimals coincide. The cubic root of 690796080 is about 883.9952976416.

The spelling of 690796080 in words is "six hundred ninety million, seven hundred ninety-six thousand, eighty".