690288206628 has 24 divisors (see below), whose sum is σ = 1610783581120. Its totient is φ = 230080197600.

The previous prime is 690288206519. The next prime is 690288206677. The reversal of 690288206628 is 826602882096.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1802023 + ... + 2151246.

Almost surely, 2^690288206628 is an apocalyptic number.

It is an amenable number.

690288206628 is an abundant number, since it is smaller than the sum of its proper divisors (920495374492).

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

690288206628 is a wasteful number, since it uses less digits than its factorization.

690288206628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967827 (or 3967825 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 57.

The spelling of 690288206628 in words is "six hundred ninety billion, two hundred eighty-eight million, two hundred six thousand, six hundred twenty-eight".