685491354 has 24 divisors (see below), whose sum is σ = 1486149600. Its totient is φ = 228355848.

The previous prime is 685491349. The next prime is 685491371. The reversal of 685491354 is 453194586.

685491354 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×685491354³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20547 + ... + 42345.

It is an arithmetic number, because the mean of its divisors is an integer number (61922900).

Almost surely, 2^685491354 is an apocalyptic number.

685491354 is an abundant number, since it is smaller than the sum of its proper divisors (800658246).

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

685491354 is a wasteful number, since it uses less digits than its factorization.

685491354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23554 (or 23551 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 685491354 is about 26181.8898095611. The cubic root of 685491354 is about 881.7267035461.

The spelling of 685491354 in words is "six hundred eighty-five million, four hundred ninety-one thousand, three hundred fifty-four".