690814017 has 12 divisors (see below), whose sum is σ = 1032251220. Its totient is φ = 444661728.

The previous prime is 690814001. The next prime is 690814051. The reversal of 690814017 is 710418096.

It can be written as a sum of positive squares in 2 ways, for example, as 144937521 + 545876496 = 12039^2 + 23364^2 .

It is not a de Polignac number, because 690814017 - 2⁴ = 690814001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (690814097) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1323138 + ... + 1323659.

It is an arithmetic number, because the mean of its divisors is an integer number (86020935).

Almost surely, 2^690814017 is an apocalyptic number.

It is an amenable number.

690814017 is a deficient number, since it is larger than the sum of its proper divisors (341437203).

690814017 is a wasteful number, since it uses less digits than its factorization.

690814017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2646832 (or 2646829 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 690814017 is about 26283.3410547442. The cubic root of 690814017 is about 884.0029487593.

The spelling of 690814017 in words is "six hundred ninety million, eight hundred fourteen thousand, seventeen".