685453464 has 96 divisors (see below), whose sum is σ = 1985087520. Its totient is φ = 212917248.

The previous prime is 685453463. The next prime is 685453487. The reversal of 685453464 is 464354586.

685453464 is a `hidden beast` number, since 6 + 8 + 54 + 534 + 64 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685453463) 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 23 ways as a sum of consecutive naturals, for example, 123354 + ... + 128790.

It is an arithmetic number, because the mean of its divisors is an integer number (20677995).

Almost surely, 2^685453464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685453464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (992543760).

685453464 is an abundant number, since it is smaller than the sum of its proper divisors (1299634056).

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

685453464 is a wasteful number, since it uses less digits than its factorization.

685453464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5569 (or 5562 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 45.

The square root of 685453464 is about 26181.1662077914. The cubic root of 685453464 is about 881.7104576615.

The spelling of 685453464 in words is "six hundred eighty-five million, four hundred fifty-three thousand, four hundred sixty-four".