685432647498 has 16 divisors (see below), whose sum is σ = 1370923004736. Its totient is φ = 228467930880.

The previous prime is 685432647479. The next prime is 685432647503. The reversal of 685432647498 is 894746234586.

It is a super-2 number, since 2×685432647498² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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, 2249398 + ... + 2535873.

It is an arithmetic number, because the mean of its divisors is an integer number (85682687796).

Almost surely, 2^685432647498 is an apocalyptic number.

685432647498 is an abundant number, since it is smaller than the sum of its proper divisors (685490357238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685432647498 is a wasteful number, since it uses less digits than its factorization.

685432647498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4809149.

The product of its digits is 278691840, while the sum is 66.

The spelling of 685432647498 in words is "six hundred eighty-five billion, four hundred thirty-two million, six hundred forty-seven thousand, four hundred ninety-eight".