690729601 has 8 divisors (see below), whose sum is σ = 731756160. Its totient is φ = 649747008.

The previous prime is 690729593. The next prime is 690729643. The reversal of 690729601 is 106927096.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 690729601 - 2³ = 690729593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (690729671) 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 7 ways as a sum of consecutive naturals, for example, 24700 + ... + 44626.

It is an arithmetic number, because the mean of its divisors is an integer number (91469520).

Almost surely, 2^690729601 is an apocalyptic number.

It is an amenable number.

690729601 is a deficient number, since it is larger than the sum of its proper divisors (41026559).

690729601 is a wasteful number, since it uses less digits than its factorization.

690729601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21983.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 690729601 is about 26281.7351215630. The cubic root of 690729601 is about 883.9669395340.

The spelling of 690729601 in words is "six hundred ninety million, seven hundred twenty-nine thousand, six hundred one".