690597663 has 16 divisors (see below), whose sum is σ = 1054200576. Its totient is φ = 393929280.

The previous prime is 690597659. The next prime is 690597667. The reversal of 690597663 is 366795096.

It is an interprime number because it is at equal distance from previous prime (690597659) and next prime (690597667).

It is not a de Polignac number, because 690597663 - 2² = 690597659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690597667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16806 + ... + 40787.

It is an arithmetic number, because the mean of its divisors is an integer number (65887536).

Almost surely, 2^690597663 is an apocalyptic number.

690597663 is a deficient number, since it is larger than the sum of its proper divisors (363602913).

690597663 is a wasteful number, since it uses less digits than its factorization.

690597663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58174.

The product of its (nonzero) digits is 1837080, while the sum is 51.

The square root of 690597663 is about 26279.2249314929. The cubic root of 690597663 is about 883.9106530332.

The spelling of 690597663 in words is "six hundred ninety million, five hundred ninety-seven thousand, six hundred sixty-three".