690790722 has 16 divisors (see below), whose sum is σ = 1382566752. Its totient is φ = 230099360.

The previous prime is 690790697. The next prime is 690790729. The reversal of 690790722 is 227097096.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (690790729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31779 + ... + 48902.

It is an arithmetic number, because the mean of its divisors is an integer number (86410422).

Almost surely, 2^690790722 is an apocalyptic number.

690790722 is an abundant number, since it is smaller than the sum of its proper divisors (691776030).

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

690790722 is a wasteful number, since it uses less digits than its factorization.

690790722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82113.

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 690790722 is about 26282.8978995848. The cubic root of 690790722 is about 883.9930121340.

The spelling of 690790722 in words is "six hundred ninety million, seven hundred ninety thousand, seven hundred twenty-two".