690630981237 has 16 divisors (see below), whose sum is σ = 1023647345280. Its totient is φ = 460200002976.

The previous prime is 690630981233. The next prime is 690630981301. The reversal of 690630981237 is 732189036096.

It is not a de Polignac number, because 690630981237 - 2² = 690630981233 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690630981233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6071808 + ... + 6184505.

It is an arithmetic number, because the mean of its divisors is an integer number (63977959080).

Almost surely, 2^690630981237 is an apocalyptic number.

It is an amenable number.

690630981237 is a deficient number, since it is larger than the sum of its proper divisors (333016364043).

690630981237 is a wasteful number, since it uses less digits than its factorization.

690630981237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12258409 (or 12258403 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 690630981237 in words is "six hundred ninety billion, six hundred thirty million, nine hundred eighty-one thousand, two hundred thirty-seven".