690768976 has 10 divisors (see below), whose sum is σ = 1338364922. Its totient is φ = 345384480.

The previous prime is 690768937. The next prime is 690768977. The reversal of 690768976 is 679867096.

It can be written as a sum of positive squares in only one way, i.e., 674960400 + 15808576 = 25980^2 + 3976^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 690768976.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690768977) 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 as a sum of consecutive naturals, namely, 21586515 + ... + 21586546.

Almost surely, 2^690768976 is an apocalyptic number.

It is an amenable number.

690768976 is a deficient number, since it is larger than the sum of its proper divisors (647595946).

690768976 is a wasteful number, since it uses less digits than its factorization.

690768976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43173069 (or 43173063 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 58.

The square root of 690768976 is about 26282.4842052649. The cubic root of 690768976 is about 883.9837360425.

The spelling of 690768976 in words is "six hundred ninety million, seven hundred sixty-eight thousand, nine hundred seventy-six".