685001611 has 8 divisors (see below), whose sum is σ = 784104704. Its totient is φ = 586209960.

The previous prime is 685001599. The next prime is 685001633. The reversal of 685001611 is 116100586.

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

It is not a de Polignac number, because 685001611 - 2¹⁷ = 684870539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 685001611.

It is not an unprimeable number, because it can be changed into a prime (685001651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73125 + ... + 81958.

It is an arithmetic number, because the mean of its divisors is an integer number (98013088).

Almost surely, 2^685001611 is an apocalyptic number.

685001611 is a deficient number, since it is larger than the sum of its proper divisors (99103093).

685001611 is a wasteful number, since it uses less digits than its factorization.

685001611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155721.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 685001611 is about 26172.5354331597. The cubic root of 685001611 is about 881.5166730058.

The spelling of 685001611 in words is "six hundred eighty-five million, one thousand, six hundred eleven".