685248701 has 4 divisors (see below), whose sum is σ = 685418400. Its totient is φ = 685079004.

The previous prime is 685248679. The next prime is 685248719. The reversal of 685248701 is 107842586.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 107842586 = 2 ⋅53921293.

It is a cyclic number.

It is not a de Polignac number, because 685248701 - 2¹⁸ = 684986557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685248101) 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, 78641 + ... + 86918.

It is an arithmetic number, because the mean of its divisors is an integer number (171354600).

Almost surely, 2^685248701 is an apocalyptic number.

It is an amenable number.

685248701 is a deficient number, since it is larger than the sum of its proper divisors (169699).

685248701 is a wasteful number, since it uses less digits than its factorization.

685248701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169698.

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 685248701 is about 26177.2554138130. The cubic root of 685248701 is about 881.6226522069.

The spelling of 685248701 in words is "six hundred eighty-five million, two hundred forty-eight thousand, seven hundred one".