685744152 has 32 divisors (see below), whose sum is σ = 1725722880. Its totient is φ = 227066400.

The previous prime is 685744151. The next prime is 685744153. The reversal of 685744152 is 251447586.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (685744151) and next prime (685744153).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685744151) 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 7 ways as a sum of consecutive naturals, for example, 90988 + ... + 98235.

It is an arithmetic number, because the mean of its divisors is an integer number (53928840).

Almost surely, 2^685744152 is an apocalyptic number.

It is an amenable number.

685744152 is an abundant number, since it is smaller than the sum of its proper divisors (1039978728).

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

685744152 is a wasteful number, since it uses less digits than its factorization.

685744152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189383 (or 189379 counting only the distinct ones).

The product of its digits is 268800, while the sum is 42.

The square root of 685744152 is about 26186.7170909223. The cubic root of 685744152 is about 881.8350790206.

The spelling of 685744152 in words is "six hundred eighty-five million, seven hundred forty-four thousand, one hundred fifty-two".