690482069 has 8 divisors (see below), whose sum is σ = 694084440. Its totient is φ = 686889216.

The previous prime is 690481993. The next prime is 690482071. The reversal of 690482069 is 960284096.

It can be written as a sum of positive squares in 4 ways, for example, as 49885969 + 640596100 = 7063^2 + 25310^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 690482069 - 2¹⁶ = 690416533 is a prime.

It is a super-2 number, since 2×690482069² = 953530975221041522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690482269) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 176159 + ... + 180035.

It is an arithmetic number, because the mean of its divisors is an integer number (86760555).

Almost surely, 2^690482069 is an apocalyptic number.

It is an amenable number.

690482069 is a deficient number, since it is larger than the sum of its proper divisors (3602371).

690482069 is a wasteful number, since it uses less digits than its factorization.

690482069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4759.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 690482069 is about 26277.0254975711. The cubic root of 690482069 is about 883.8613332074.

It can be divided in two parts, 69048 and 2069, that added together give a palindrome (71117).

The spelling of 690482069 in words is "six hundred ninety million, four hundred eighty-two thousand, sixty-nine".