690288206630 has 32 divisors (see below), whose sum is σ = 1361553435648. Its totient is φ = 249888261600.

The previous prime is 690288206519. The next prime is 690288206677. The reversal of 690288206630 is 36602882096.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14045756 + ... + 14094815.

It is an arithmetic number, because the mean of its divisors is an integer number (42548544864).

Almost surely, 2^690288206630 is an apocalyptic number.

690288206630 is a deficient number, since it is larger than the sum of its proper divisors (671265229018).

690288206630 is a wasteful number, since it uses less digits than its factorization.

690288206630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28140812.

The product of its (nonzero) digits is 1492992, while the sum is 50.

It can be divided in two parts, 6902882066 and 30, that added together give a palindrome (6902882096).

The spelling of 690288206630 in words is "six hundred ninety billion, two hundred eighty-eight million, two hundred six thousand, six hundred thirty".