690923601 has 32 divisors (see below), whose sum is σ = 1040048640. Its totient is φ = 458920080.

The previous prime is 690923599. The next prime is 690923663. The reversal of 690923601 is 106329096.

It is not a de Polignac number, because 690923601 - 2¹ = 690923599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (690923671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 942231 + ... + 942963.

It is an arithmetic number, because the mean of its divisors is an integer number (32501520).

Almost surely, 2^690923601 is an apocalyptic number.

It is an amenable number.

690923601 is a deficient number, since it is larger than the sum of its proper divisors (349125039).

690923601 is an frugal number, since it uses more digits than its factorization.

690923601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185 (or 1167 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 690923601 is about 26285.4256385549. The cubic root of 690923601 is about 884.0496894907.

The spelling of 690923601 in words is "six hundred ninety million, nine hundred twenty-three thousand, six hundred one".