690235286416 has 75 divisors (see below), whose sum is σ = 1449950984741. Its totient is φ = 318310921344.

The previous prime is 690235286393. The next prime is 690235286443. The reversal of 690235286416 is 614682532096.

The square root of 690235286416 is 830804.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 420417372816 + 269817913600 = 648396^2 + 519440^2 .

It is a super-2 number, since 2×690235286416² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 561622890 + ... + 561624118.

Almost surely, 2^690235286416 is an apocalyptic number.

690235286416 is the 830804-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690235286416

690235286416 is an abundant number, since it is smaller than the sum of its proper divisors (759715698325).

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

690235286416 is an frugal number, since it uses more digits than its factorization.

690235286416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518 (or 1244 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 690235286416 in words is "six hundred ninety billion, two hundred thirty-five million, two hundred eighty-six thousand, four hundred sixteen".