690279001 has 4 divisors (see below), whose sum is σ = 690372772. Its totient is φ = 690185232.

The previous prime is 690278983. The next prime is 690279047. The reversal of 690279001 is 100972096.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 333975625 + 356303376 = 18275^2 + 18876^2 .

It is a cyclic number.

It is not a de Polignac number, because 690279001 - 2¹³ = 690270809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690279701) 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 3 ways as a sum of consecutive naturals, for example, 34806 + ... + 50911.

It is an arithmetic number, because the mean of its divisors is an integer number (172593193).

Almost surely, 2^690279001 is an apocalyptic number.

It is an amenable number.

690279001 is a deficient number, since it is larger than the sum of its proper divisors (93771).

690279001 is an equidigital number, since it uses as much as digits as its factorization.

690279001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93770.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 690279001 is about 26273.1612296655. The cubic root of 690279001 is about 883.7746780239.

The spelling of 690279001 in words is "six hundred ninety million, two hundred seventy-nine thousand, one".