685413415501 has 8 divisors (see below), whose sum is σ = 685898822520. Its totient is φ = 684928140288.

The previous prime is 685413415481. The next prime is 685413415571. The reversal of 685413415501 is 105514314586.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 412229486601 + 273183928900 = 642051^2 + 522670^2 .

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 685413415501 - 2¹¹ = 685413413453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685413415571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11850685 + ... + 11908381.

It is an arithmetic number, because the mean of its divisors is an integer number (85737352815).

Almost surely, 2^685413415501 is an apocalyptic number.

It is an amenable number.

685413415501 is a deficient number, since it is larger than the sum of its proper divisors (485407019).

685413415501 is a wasteful number, since it uses less digits than its factorization.

685413415501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65903.

The product of its (nonzero) digits is 288000, while the sum is 43.

The spelling of 685413415501 in words is "six hundred eighty-five billion, four hundred thirteen million, four hundred fifteen thousand, five hundred one".